21100310402 has 8 divisors (see below), whose sum is σ = 32122860816. Its totient is φ = 10392690132.

The previous prime is 21100310401. The next prime is 21100310411. The reversal of 21100310402 is 20401300112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21100310401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78732368 + ... + 78732635.

It is an arithmetic number, because the mean of its divisors is an integer number (4015357602).

Almost surely, 2^21100310402 is an apocalyptic number.

21100310402 is a deficient number, since it is larger than the sum of its proper divisors (11022550414).

21100310402 is a wasteful number, since it uses less digits than its factorization.

21100310402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157465072.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21100310402 its reverse (20401300112), we get a palindrome (41501610514).

The spelling of 21100310402 in words is "twenty-one billion, one hundred million, three hundred ten thousand, four hundred two".