102111222212120 has 64 divisors (see below), whose sum is σ = 253118187303840. Its totient is φ = 36763716352000.

The previous prime is 102111222212119. The next prime is 102111222212137. The reversal of 102111222212120 is 21212222111201.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 102111222212092 and 102111222212101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1148821697 + ... + 1148910576.

Almost surely, 2^{102111222212120} is an apocalyptic number.

102111222212120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102111222212120 is an abundant number, since it is smaller than the sum of its proper divisors (151006965091720).

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

102111222212120 is a wasteful number, since it uses less digits than its factorization.

102111222212120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2297732396 (or 2297732392 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 102111222212120 its reverse (21212222111201), we get a palindrome (123323444323321).

It can be divided in two parts, 1021112 and 22212120, that added together give a palindrome (23233232).

The spelling of 102111222212120 in words is "one hundred two trillion, one hundred eleven billion, two hundred twenty-two million, two hundred twelve thousand, one hundred twenty".