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20020212222 = 2316272050831
BaseRepresentation
bin10010101001010011…
…000011000111111110
31220200020120011012120
4102221103003013332
5312000133242342
613110330343410
71306055665443
oct225123030776
956606504176
1020020212222
11854398483a
123a6888ab66
131b7093382a
14d7cc679ca
157c290eaec
hex4a94c31fe

20020212222 has 16 divisors (see below), whose sum is σ = 40065053952. Its totient is φ = 6669299160.

The previous prime is 20020212221. The next prime is 20020212281. The reversal of 20020212222 is 22221202002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020212221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1015654 + ... + 1035177.

It is an arithmetic number, because the mean of its divisors is an integer number (2504065872).

Almost surely, 220020212222 is an apocalyptic number.

20020212222 is an abundant number, since it is smaller than the sum of its proper divisors (20044841730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20020212222 is a wasteful number, since it uses less digits than its factorization.

20020212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2052463.

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 20020212222 its reverse (22221202002), we get a palindrome (42241414224).

The spelling of 20020212222 in words is "twenty billion, twenty million, two hundred twelve thousand, two hundred twenty-two".

Divisors: 1 2 3 6 1627 3254 4881 9762 2050831 4101662 6152493 12304986 3336702037 6673404074 10010106111 20020212222