102021112111212 has 36 divisors (see below), whose sum is σ = 294727657210896. Its totient is φ = 29148889174560.

The previous prime is 102021112111199. The next prime is 102021112111291. The reversal of 102021112111212 is 212111211120201.

It is a happy number.

102021112111212 is a `hidden beast` number, since 10 + 20 + 211 + 1 + 211 + 1 + 212 = 666.

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

It is a super-2 number, since 2×102021112111212² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 202422841239 + ... + 202422841742.

Almost surely, 2^{102021112111212} is an apocalyptic number.

102021112111212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102021112111212 is an abundant number, since it is smaller than the sum of its proper divisors (192706545099684).

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

102021112111212 is a wasteful number, since it uses less digits than its factorization.

102021112111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404845682998 (or 404845682993 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 102021112111212 its reverse (212111211120201), we get a palindrome (314132323231413).

The spelling of 102021112111212 in words is "one hundred two trillion, twenty-one billion, one hundred twelve million, one hundred eleven thousand, two hundred twelve".