21100210440002 has 8 divisors (see below), whose sum is σ = 31650347070012. Its totient is φ = 10550094750000.

The previous prime is 21100210439941. The next prime is 21100210440011. The reversal of 21100210440002 is 20004401200112.

It can be written as a sum of positive squares in 2 ways, for example, as 20469299538601 + 630910901401 = 4524301^2 + 794299^2 .

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

It is a super-2 number, since 2×21100210440002² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2411249 + ... + 6929252.

Almost surely, 2^{21100210440002} is an apocalyptic number.

21100210440002 is a deficient number, since it is larger than the sum of its proper divisors (10550136630010).

21100210440002 is a wasteful number, since it uses less digits than its factorization.

21100210440002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10470004.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21100210440002 its reverse (20004401200112), we get a palindrome (41104611640114).

The spelling of 21100210440002 in words is "twenty-one trillion, one hundred billion, two hundred ten million, four hundred forty thousand, two".