102111212021202 has 16 divisors (see below), whose sum is σ = 226913804491680. Its totient is φ = 34037070673716.

The previous prime is 102111212021201. The next prime is 102111212021227. The reversal of 102111212021202 is 202120212111201.

102111212021202 is a `hidden beast` number, since 10 + 211 + 121 + 202 + 120 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (102111212021201) 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, 945474185328 + ... + 945474185435.

It is an arithmetic number, because the mean of its divisors is an integer number (14182112780730).

Almost surely, 2^{102111212021202} is an apocalyptic number.

102111212021202 is an abundant number, since it is smaller than the sum of its proper divisors (124802592470478).

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

102111212021202 is a wasteful number, since it uses less digits than its factorization.

102111212021202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1890948370774 (or 1890948370768 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 102111212021202 its reverse (202120212111201), we get a palindrome (304231424132403).

The spelling of 102111212021202 in words is "one hundred two trillion, one hundred eleven billion, two hundred twelve million, twenty-one thousand, two hundred two".