20102212210121 has 32 divisors (see below), whose sum is σ = 22093484783616. Its totient is φ = 18231662592000.

The previous prime is 20102212210099. The next prime is 20102212210141. The reversal of 20102212210121 is 12101221220102.

It is a cyclic number.

It is not a de Polignac number, because 20102212210121 - 2¹⁰ = 20102212209097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20102212210121.

It is not an unprimeable number, because it can be changed into a prime (20102212210141) 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, 10278491 + ... + 12076911.

It is an arithmetic number, because the mean of its divisors is an integer number (690421399488).

Almost surely, 2^{20102212210121} is an apocalyptic number.

It is an amenable number.

20102212210121 is a deficient number, since it is larger than the sum of its proper divisors (1991272573495).

20102212210121 is a wasteful number, since it uses less digits than its factorization.

20102212210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1798793.

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

Adding to 20102212210121 its reverse (12101221220102), we get a palindrome (32203433430223).

The spelling of 20102212210121 in words is "twenty trillion, one hundred two billion, two hundred twelve million, two hundred ten thousand, one hundred twenty-one".