20122220121102 has 48 divisors (see below), whose sum is σ = 48213140150448. Its totient is φ = 6014113107840.

The previous prime is 20122220121067. The next prime is 20122220121131. The reversal of 20122220121102 is 20112102222102.

It is a happy number.

20122220121102 is a `hidden beast` number, since 201 + 22 + 220 + 121 + 102 = 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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 696063453 + ... + 696092360.

It is an arithmetic number, because the mean of its divisors is an integer number (1004440419801).

Almost surely, 2^{20122220121102} is an apocalyptic number.

20122220121102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20122220121102 is an abundant number, since it is smaller than the sum of its proper divisors (28090920029346).

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

20122220121102 is a wasteful number, since it uses less digits than its factorization.

20122220121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392155905 (or 1392155902 counting only the distinct ones).

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

Adding to 20122220121102 its reverse (20112102222102), we get a palindrome (40234322343204).

The spelling of 20122220121102 in words is "twenty trillion, one hundred twenty-two billion, two hundred twenty million, one hundred twenty-one thousand, one hundred two".