2131102220022 has 96 divisors (see below), whose sum is σ = 4975301560320. Its totient is φ = 657137629440.

The previous prime is 2131102219979. The next prime is 2131102220053. The reversal of 2131102220022 is 2200222011312.

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 = 2131102219977 and 2131102220004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6806947 + ... + 7113137.

It is an arithmetic number, because the mean of its divisors is an integer number (51826057920).

Almost surely, 2^{2131102220022} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2131102220022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2487650780160).

2131102220022 is an abundant number, since it is smaller than the sum of its proper divisors (2844199340298).

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

2131102220022 is a wasteful number, since it uses less digits than its factorization.

2131102220022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306698 (or 306695 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 2131102220022 its reverse (2200222011312), we get a palindrome (4331324231334).

The spelling of 2131102220022 in words is "two trillion, one hundred thirty-one billion, one hundred two million, two hundred twenty thousand, twenty-two".