2102020021122 has 64 divisors (see below), whose sum is σ = 4911289632000. Its totient is φ = 599521319040.

The previous prime is 2102020021103. The next prime is 2102020021133. The reversal of 2102020021122 is 2211200202012.

It is a super-2 number, since 2×2102020021122² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 273472 + ... + 2068532.

It is an arithmetic number, because the mean of its divisors is an integer number (76738900500).

Almost surely, 2^{2102020021122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2102020021122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2455644816000).

2102020021122 is an abundant number, since it is smaller than the sum of its proper divisors (2809269610878).

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

2102020021122 is a wasteful number, since it uses less digits than its factorization.

2102020021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1795656 (or 1795642 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2102020021122 its reverse (2211200202012), we get a palindrome (4313220223134).

The spelling of 2102020021122 in words is "two trillion, one hundred two billion, twenty million, twenty-one thousand, one hundred twenty-two".