102121011212 has 24 divisors (see below), whose sum is σ = 197426127360. Its totient is φ = 45831062160.

The previous prime is 102121011193. The next prime is 102121011227. The reversal of 102121011212 is 212110121201.

It is a super-2 number, since 2×102121011212² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14685968 + ... + 14692919.

It is an arithmetic number, because the mean of its divisors is an integer number (8226088640).

Almost surely, 2^102121011212 is an apocalyptic number.

It is an amenable number.

102121011212 is a deficient number, since it is larger than the sum of its proper divisors (95305116148).

102121011212 is a wasteful number, since it uses less digits than its factorization.

102121011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29378981 (or 29378979 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 102121011212 its reverse (212110121201), we get a palindrome (314231132413).

The spelling of 102121011212 in words is "one hundred two billion, one hundred twenty-one million, eleven thousand, two hundred twelve".