2100022402 has 4 divisors (see below), whose sum is σ = 3150033606. Its totient is φ = 1050011200.

The previous prime is 2100022381. The next prime is 2100022403. The reversal of 2100022402 is 2042200012.

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., 2063794041 + 36228361 = 45429^2 + 6019^2 .

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2100022403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525005599 + ... + 525005602.

Almost surely, 2^2100022402 is an apocalyptic number.

2100022402 is a deficient number, since it is larger than the sum of its proper divisors (1050011204).

2100022402 is a wasteful number, since it uses less digits than its factorization.

2100022402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050011203.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 2100022402 is about 45826.0013747654. The cubic root of 2100022402 is about 1280.5837185482.

Adding to 2100022402 its reverse (2042200012), we get a palindrome (4142222414).

The spelling of 2100022402 in words is "two billion, one hundred million, twenty-two thousand, four hundred two".