20002122111021 has 16 divisors (see below), whose sum is σ = 26719578473088. Its totient is φ = 13309708363200.

The previous prime is 20002122110953. The next prime is 20002122111073. The reversal of 20002122111021 is 12011122120002.

It is not a de Polignac number, because 20002122111021 - 2¹⁴ = 20002122094637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002122111221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61497195 + ... + 61821591.

It is an arithmetic number, because the mean of its divisors is an integer number (1669973654568).

Almost surely, 2^{20002122111021} is an apocalyptic number.

It is an amenable number.

20002122111021 is a deficient number, since it is larger than the sum of its proper divisors (6717456362067).

20002122111021 is a wasteful number, since it uses less digits than its factorization.

20002122111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362932.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20002122111021 its reverse (12011122120002), we get a palindrome (32013244231023).

The spelling of 20002122111021 in words is "twenty trillion, two billion, one hundred twenty-two million, one hundred eleven thousand, twenty-one".