21000221233102 has 32 divisors (see below), whose sum is σ = 31862735841024. Its totient is φ = 10380061440000.

The previous prime is 21000221233073. The next prime is 21000221233141. The reversal of 21000221233102 is 20133212200012.

It is a self number, because there is not a number n which added to its sum of digits gives 21000221233102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81443593 + ... + 81701035.

It is an arithmetic number, because the mean of its divisors is an integer number (995710495032).

Almost surely, 2^{21000221233102} is an apocalyptic number.

21000221233102 is a deficient number, since it is larger than the sum of its proper divisors (10862514607922).

21000221233102 is a wasteful number, since it uses less digits than its factorization.

21000221233102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258904.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21000221233102 its reverse (20133212200012), we get a palindrome (41133433433114).

The spelling of 21000221233102 in words is "twenty-one trillion, two hundred twenty-one million, two hundred thirty-three thousand, one hundred two".