102001212 has 36 divisors (see below), whose sum is σ = 258290760. Its totient is φ = 33940512.

The previous prime is 102001201. The next prime is 102001217. The reversal of 102001212 is 212100201.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 102001194 and 102001203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102001217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21339 + ... + 25677.

Almost surely, 2^102001212 is an apocalyptic number.

102001212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102001212 is an abundant number, since it is smaller than the sum of its proper divisors (156289548).

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

102001212 is a wasteful number, since it uses less digits than its factorization.

102001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5002 (or 4997 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 102001212 is about 10099.5649411249. The cubic root of 102001212 is about 467.2347234368.

Adding to 102001212 its reverse (212100201), we get a palindrome (314101413).

The spelling of 102001212 in words is "one hundred two million, one thousand, two hundred twelve".