21221232000102 has 48 divisors (see below), whose sum is σ = 48764969386848. Its totient is φ = 6655268759040.

The previous prime is 21221232000077. The next prime is 21221232000107. The reversal of 21221232000102 is 20100023212212.

21221232000102 is a `hidden beast` number, since 21 + 221 + 2 + 320 + 0 + 0 + 102 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21221232000107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 420130603 + ... + 420181110.

It is an arithmetic number, because the mean of its divisors is an integer number (1015936862226).

Almost surely, 2^{21221232000102} is an apocalyptic number.

21221232000102 is an abundant number, since it is smaller than the sum of its proper divisors (27543737386746).

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

21221232000102 is a wasteful number, since it uses less digits than its factorization.

21221232000102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840311805 (or 840311802 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 21221232000102 its reverse (20100023212212), we get a palindrome (41321255212314).

The spelling of 21221232000102 in words is "twenty-one trillion, two hundred twenty-one billion, two hundred thirty-two million, one hundred two", and thus it is an aban number.