20002121101012 has 24 divisors (see below), whose sum is σ = 36213309941760. Its totient is φ = 9655510136160.

The previous prime is 20002121100971. The next prime is 20002121101021. The reversal of 20002121101012 is 21010112120002.

It is a junction number, because it is equal to n+sod(n) for n = 20002121100983 and 20002121101001.

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, 4486164 + ... + 7754347.

It is an arithmetic number, because the mean of its divisors is an integer number (1508887914240).

Almost surely, 2^{20002121101012} is an apocalyptic number.

It is an amenable number.

20002121101012 is a deficient number, since it is larger than the sum of its proper divisors (16211188840748).

20002121101012 is a wasteful number, since it uses less digits than its factorization.

20002121101012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12254631 (or 12254629 counting only the distinct ones).

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

Adding to 20002121101012 its reverse (21010112120002), we get a palindrome (41012233221014).

The spelling of 20002121101012 in words is "twenty trillion, two billion, one hundred twenty-one million, one hundred one thousand, twelve".