2101550254402 has 4 divisors (see below), whose sum is σ = 3152325381606. Its totient is φ = 1050775127200.

The previous prime is 2101550254387. The next prime is 2101550254403. The reversal of 2101550254402 is 2044520551012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1499108833161 + 602441421241 = 1224381^2 + 776171^2 .

It is a super-2 number, since 2×2101550254402² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2101550254403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525387563599 + ... + 525387563602.

Almost surely, 2^{2101550254402} is an apocalyptic number.

2101550254402 is a deficient number, since it is larger than the sum of its proper divisors (1050775127204).

2101550254402 is a wasteful number, since it uses less digits than its factorization.

2101550254402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050775127203.

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 2101550254402 in words is "two trillion, one hundred one billion, five hundred fifty million, two hundred fifty-four thousand, four hundred two".