100121021020012 has 6 divisors (see below), whose sum is σ = 175211786785028. Its totient is φ = 50060510510004.

The previous prime is 100121021019961. The next prime is 100121021020037. The reversal of 100121021020012 is 210020120121001.

It is a junction number, because it is equal to n+sod(n) for n = 100121021019974 and 100121021020001.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12515127627498 + ... + 12515127627505.

Almost surely, 2^{100121021020012} is an apocalyptic number.

It is an amenable number.

100121021020012 is a deficient number, since it is larger than the sum of its proper divisors (75090765765016).

100121021020012 is a wasteful number, since it uses less digits than its factorization.

100121021020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25030255255007 (or 25030255255005 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 100121021020012 its reverse (210020120121001), we get a palindrome (310141141141013).

The spelling of 100121021020012 in words is "one hundred trillion, one hundred twenty-one billion, twenty-one million, twenty thousand, twelve".