20102220111021 has 8 divisors (see below), whose sum is σ = 26803058510880. Its totient is φ = 13401430892592.

The previous prime is 20102220111013. The next prime is 20102220111023. The reversal of 20102220111021 is 12011102220102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20102220111021 - 2³ = 20102220111013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102220111023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11330830 + ... + 12984303.

It is an arithmetic number, because the mean of its divisors is an integer number (3350382313860).

Almost surely, 2^{20102220111021} is an apocalyptic number.

It is an amenable number.

20102220111021 is a deficient number, since it is larger than the sum of its proper divisors (6700838399859).

20102220111021 is a wasteful number, since it uses less digits than its factorization.

20102220111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24590715.

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

Adding to 20102220111021 its reverse (12011102220102), we get a palindrome (32113322331123).

The spelling of 20102220111021 in words is "twenty trillion, one hundred two billion, two hundred twenty million, one hundred eleven thousand, twenty-one".