20021012011202 has 4 divisors (see below), whose sum is σ = 30031518016806. Its totient is φ = 10010506005600.

The previous prime is 20021012011201. The next prime is 20021012011213. The reversal of 20021012011202 is 20211021012002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19064060470081 + 956951541121 = 4366241^2 + 978239^2 .

It is not an unprimeable number, because it can be changed into a prime (20021012011201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005253002799 + ... + 5005253002802.

Almost surely, 2^{20021012011202} is an apocalyptic number.

20021012011202 is a deficient number, since it is larger than the sum of its proper divisors (10010506005604).

20021012011202 is a wasteful number, since it uses less digits than its factorization.

20021012011202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10010506005603.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20021012011202 its reverse (20211021012002), we get a palindrome (40232033023204).

The spelling of 20021012011202 in words is "twenty trillion, twenty-one billion, twelve million, eleven thousand, two hundred two".