20201220222102 has 12 divisors (see below), whose sum is σ = 43769310481260. Its totient is φ = 6733740074028.

The previous prime is 20201220222097. The next prime is 20201220222173. The reversal of 20201220222102 is 20122202210202.

20201220222102 is a `hidden beast` number, since 20 + 201 + 220 + 2 + 221 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1122290012339 = 20201220222102 / (2 + 0 + 2 + 0 + 1 + 2 + 2 + 0 + 2 + 2 + 2 + 1 + 0 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 561145006152 + ... + 561145006187.

It is an arithmetic number, because the mean of its divisors is an integer number (3647442540105).

Almost surely, 2^{20201220222102} is an apocalyptic number.

20201220222102 is an abundant number, since it is smaller than the sum of its proper divisors (23568090259158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20201220222102 is a wasteful number, since it uses less digits than its factorization.

20201220222102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122290012347 (or 1122290012344 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20201220222102 its reverse (20122202210202), we get a palindrome (40323422432304).

The spelling of 20201220222102 in words is "twenty trillion, two hundred one billion, two hundred twenty million, two hundred twenty-two thousand, one hundred two".