20100021020122 has 16 divisors (see below), whose sum is σ = 30207074914152. Its totient is φ = 10031011294720.

The previous prime is 20100021020119. The next prime is 20100021020197. The reversal of 20100021020122 is 22102012000102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14674806454441 + 5425214565681 = 3830771^2 + 2329209^2 .

It is a super-5 number, since 5×20100021020122⁵ (a number of 68 digits) contains 55555 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1172623 + ... + 6447874.

Almost surely, 2^{20100021020122} is an apocalyptic number.

20100021020122 is a deficient number, since it is larger than the sum of its proper divisors (10107053894030).

20100021020122 is a wasteful number, since it uses less digits than its factorization.

20100021020122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7622993.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20100021020122 its reverse (22102012000102), we get a palindrome (42202033020224).

The spelling of 20100021020122 in words is "twenty trillion, one hundred billion, twenty-one million, twenty thousand, one hundred twenty-two".