20102121011122 has 16 divisors (see below), whose sum is σ = 30203021093400. Its totient is φ = 10034448020352.

The previous prime is 20102121011111. The next prime is 20102121011123. The reversal of 20102121011122 is 22111012120102.

It can be written as a sum of positive squares in 4 ways, for example, as 15476348132001 + 4625772879121 = 3933999^2 + 2150761^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20102121011096 and 20102121011105.

It is not an unprimeable number, because it can be changed into a prime (20102121011123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67341148 + ... + 67639000.

Almost surely, 2^{20102121011122} is an apocalyptic number.

20102121011122 is a deficient number, since it is larger than the sum of its proper divisors (10100900082278).

20102121011122 is a wasteful number, since it uses less digits than its factorization.

20102121011122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353517.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20102121011122 its reverse (22111012120102), we get a palindrome (42213133131224).

The spelling of 20102121011122 in words is "twenty trillion, one hundred two billion, one hundred twenty-one million, eleven thousand, one hundred twenty-two".