21000022203032 has 8 divisors (see below), whose sum is σ = 39375041630700. Its totient is φ = 10500011101512.

The previous prime is 21000022203001. The next prime is 21000022203071. The reversal of 21000022203032 is 23030222000012.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 21000022203032.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1312501387682 + ... + 1312501387697.

Almost surely, 2^{21000022203032} is an apocalyptic number.

It is an amenable number.

21000022203032 is a deficient number, since it is larger than the sum of its proper divisors (18375019427668).

21000022203032 is a wasteful number, since it uses less digits than its factorization.

21000022203032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2625002775385 (or 2625002775381 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 21000022203032 its reverse (23030222000012), we get a palindrome (44030244203044).

It can be divided in two parts, 2100002 and 2203032, that added together give a palindrome (4303034).

The spelling of 21000022203032 in words is "twenty-one trillion, twenty-two million, two hundred three thousand, thirty-two".