2102202131004 has 18 divisors (see below), whose sum is σ = 5313899831240. Its totient is φ = 700734043656.

The previous prime is 2102202130997. The next prime is 2102202131009. The reversal of 2102202131004 is 4001312022012.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102202131009) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29197251784 + ... + 29197251855.

Almost surely, 2^{2102202131004} is an apocalyptic number.

It is an amenable number.

2102202131004 is an abundant number, since it is smaller than the sum of its proper divisors (3211697700236).

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

2102202131004 is a wasteful number, since it uses less digits than its factorization.

2102202131004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58394503649 (or 58394503644 counting only the distinct ones).

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

Adding to 2102202131004 its reverse (4001312022012), we get a palindrome (6103514153016).

The spelling of 2102202131004 in words is "two trillion, one hundred two billion, two hundred two million, one hundred thirty-one thousand, four".