21000002010012 has 18 divisors (see below), whose sum is σ = 53083338414288. Its totient is φ = 7000000669992.

The previous prime is 21000002009983. The next prime is 21000002010059. The reversal of 21000002010012 is 21001020000012.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-3 number, since 3×21000002010012³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 21000002009976 and 21000002010003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 291666694548 + ... + 291666694619.

Almost surely, 2^{21000002010012} is an apocalyptic number.

It is an amenable number.

21000002010012 is an abundant number, since it is smaller than the sum of its proper divisors (32083336404276).

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

21000002010012 is a wasteful number, since it uses less digits than its factorization.

21000002010012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583333389177 (or 583333389172 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 21000002010012 its reverse (21001020000012), we get a palindrome (42001022010024).

The spelling of 21000002010012 in words is "twenty-one trillion, two million, ten thousand, twelve".