21000211202012 has 24 divisors (see below), whose sum is σ = 42134609074656. Its totient is φ = 8971336228608.

The previous prime is 21000211201939. The next prime is 21000211202041. The reversal of 21000211202012 is 21020211200012.

It is a super-2 number, since 2×21000211202012² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1198086353 + ... + 1198103880.

It is an arithmetic number, because the mean of its divisors is an integer number (1755608711444).

Almost surely, 2^{21000211202012} is an apocalyptic number.

It is an amenable number.

21000211202012 is an abundant number, since it is smaller than the sum of its proper divisors (21134397872644).

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

21000211202012 is a wasteful number, since it uses less digits than its factorization.

21000211202012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2396190557 (or 2396190555 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21000211202012 its reverse (21020211200012), we get a palindrome (42020422402024).

It can be divided in two parts, 2100021 and 1202012, that added together give a palindrome (3302033).

The spelling of 21000211202012 in words is "twenty-one trillion, two hundred eleven million, two hundred two thousand, twelve".