20002121121122 has 32 divisors (see below), whose sum is σ = 36523774603008. Its totient is φ = 8019770582016.

The previous prime is 20002121121097. The next prime is 20002121121133. The reversal of 20002121121122 is 22112112120002.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 20002121121122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251584583 + ... + 251664074.

It is an arithmetic number, because the mean of its divisors is an integer number (1141367956344).

Almost surely, 2^{20002121121122} is an apocalyptic number.

20002121121122 is a deficient number, since it is larger than the sum of its proper divisors (16521653481886).

20002121121122 is a wasteful number, since it uses less digits than its factorization.

20002121121122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503248850.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20002121121122 its reverse (22112112120002), we get a palindrome (42114233241124).

The spelling of 20002121121122 in words is "twenty trillion, two billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred twenty-two".