100121220020012 has 6 divisors (see below), whose sum is σ = 175212135035028. Its totient is φ = 50060610010004.

The previous prime is 100121220019999. The next prime is 100121220020023. The reversal of 100121220020012 is 210020022121001.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12515152502498 + ... + 12515152502505.

It is an arithmetic number, because the mean of its divisors is an integer number (29202022505838).

Almost surely, 2^{100121220020012} is an apocalyptic number.

It is an amenable number.

100121220020012 is a deficient number, since it is larger than the sum of its proper divisors (75090915015016).

100121220020012 is a wasteful number, since it uses less digits than its factorization.

100121220020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25030305005007 (or 25030305005005 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 100121220020012 its reverse (210020022121001), we get a palindrome (310141242141013).

The spelling of 100121220020012 in words is "one hundred trillion, one hundred twenty-one billion, two hundred twenty million, twenty thousand, twelve".