20100020220121 has 32 divisors (see below), whose sum is σ = 21843729768960. Its totient is φ = 18430322916096.

The previous prime is 20100020220079. The next prime is 20100020220127. The reversal of 20100020220121 is 12102202000102.

It is a happy number.

It is not a de Polignac number, because 20100020220121 - 2¹⁷ = 20100020089049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20100020220127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1415786395 + ... + 1415800591.

It is an arithmetic number, because the mean of its divisors is an integer number (682616555280).

Almost surely, 2^{20100020220121} is an apocalyptic number.

It is an amenable number.

20100020220121 is a deficient number, since it is larger than the sum of its proper divisors (1743709548839).

20100020220121 is a wasteful number, since it uses less digits than its factorization.

20100020220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24673.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20100020220121 its reverse (12102202000102), we get a palindrome (32202222220223).

The spelling of 20100020220121 in words is "twenty trillion, one hundred billion, twenty million, two hundred twenty thousand, one hundred twenty-one".