20102211220122 has 48 divisors (see below), whose sum is σ = 45169090048992. Its totient is φ = 6700565183760.

The previous prime is 20102211220121. The next prime is 20102211220129. The reversal of 20102211220122 is 22102211220102.

It is a happy number.

20102211220122 is a `hidden beast` number, since 201 + 0 + 221 + 1 + 220 + 1 + 22 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 20102211220095 and 20102211220104.

It is not an unprimeable number, because it can be changed into a prime (20102211220121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19187808 + ... + 20208324.

It is an arithmetic number, because the mean of its divisors is an integer number (941022709354).

Almost surely, 2^{20102211220122} is an apocalyptic number.

20102211220122 is an abundant number, since it is smaller than the sum of its proper divisors (25066878828870).

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

20102211220122 is a wasteful number, since it uses less digits than its factorization.

20102211220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061065 (or 1061053 counting only the distinct ones).

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

Adding to 20102211220122 its reverse (22102211220102), we get a palindrome (42204422440224).

The spelling of 20102211220122 in words is "twenty trillion, one hundred two billion, two hundred eleven million, two hundred twenty thousand, one hundred twenty-two".