102121211201012 has 24 divisors (see below), whose sum is σ = 178875902184000. Its totient is φ = 51013825292736.

The previous prime is 102121211200979. The next prime is 102121211201069. The reversal of 102121211201012 is 210102112121201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25970243 + ... + 29642805.

It is an arithmetic number, because the mean of its divisors is an integer number (7453162591000).

Almost surely, 2^{102121211201012} is an apocalyptic number.

It is an amenable number.

102121211201012 is a deficient number, since it is larger than the sum of its proper divisors (76754690982988).

102121211201012 is a wasteful number, since it uses less digits than its factorization.

102121211201012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3678935 (or 3678933 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 102121211201012 its reverse (210102112121201), we get a palindrome (312223323322213).

The spelling of 102121211201012 in words is "one hundred two trillion, one hundred twenty-one billion, two hundred eleven million, two hundred one thousand, twelve".