100121311213012 has 24 divisors (see below), whose sum is σ = 175865122369440. Its totient is φ = 49874136528480.

The previous prime is 100121311212971. The next prime is 100121311213043. The reversal of 100121311213012 is 210312113121001.

It is a super-2 number, since 2×100121311213012² (a number of 29 digits) contains 22 as substring.

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, 156702943 + ... + 157340569.

It is an arithmetic number, because the mean of its divisors is an integer number (7327713432060).

Almost surely, 2^{100121311213012} is an apocalyptic number.

It is an amenable number.

100121311213012 is a deficient number, since it is larger than the sum of its proper divisors (75743811156428).

100121311213012 is a wasteful number, since it uses less digits than its factorization.

100121311213012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783831 (or 783829 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 100121311213012 its reverse (210312113121001), we get a palindrome (310433424334013).

The spelling of 100121311213012 in words is "one hundred trillion, one hundred twenty-one billion, three hundred eleven million, two hundred thirteen thousand, twelve".