21002211201012 has 24 divisors (see below), whose sum is σ = 49060783965312. Its totient is φ = 6992790710400.

The previous prime is 21002211200977. The next prime is 21002211201031. The reversal of 21002211201012 is 21010211220012.

It is a junction number, because it is equal to n+sod(n) for n = 21002211200982 and 21002211201000.

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, 993283564 + ... + 993304707.

It is an arithmetic number, because the mean of its divisors is an integer number (2044199331888).

Almost surely, 2^{21002211201012} is an apocalyptic number.

It is an amenable number.

21002211201012 is an abundant number, since it is smaller than the sum of its proper divisors (28058572764300).

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

21002211201012 is a wasteful number, since it uses less digits than its factorization.

21002211201012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986589159 (or 1986589157 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21002211201012 its reverse (21010211220012), we get a palindrome (42012422421024).

The spelling of 21002211201012 in words is "twenty-one trillion, two billion, two hundred eleven million, two hundred one thousand, twelve".