20021122122102 has 48 divisors (see below), whose sum is σ = 46385570136672. Its totient is φ = 6218946873600.

The previous prime is 20021122122083. The next prime is 20021122122149. The reversal of 20021122122102 is 20122122112002.

It is a happy number.

20021122122102 is a `hidden beast` number, since 20 + 0 + 211 + 221 + 2 + 210 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 323872578 + ... + 323934389.

It is an arithmetic number, because the mean of its divisors is an integer number (966366044514).

Almost surely, 2^{20021122122102} is an apocalyptic number.

20021122122102 is an abundant number, since it is smaller than the sum of its proper divisors (26364448014570).

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

20021122122102 is a wasteful number, since it uses less digits than its factorization.

20021122122102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647807093 (or 647807090 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20021122122102 its reverse (20122122112002), we get a palindrome (40143244234104).

It can be divided in two parts, 2002112 and 2122102, that added together give a palindrome (4124214).

The spelling of 20021122122102 in words is "twenty trillion, twenty-one billion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred two".