21222101021000 has 64 divisors (see below), whose sum is σ = 54174236088960. Its totient is φ = 7717127640000.

The previous prime is 21222101020963. The next prime is 21222101021071. The reversal of 21222101021000 is 12010122212.

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, 964629956 + ... + 964651955.

It is an arithmetic number, because the mean of its divisors is an integer number (846472438890).

Almost surely, 2^{21222101021000} is an apocalyptic number.

21222101021000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21222101021000 is an abundant number, since it is smaller than the sum of its proper divisors (32952135067960).

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

21222101021000 is a wasteful number, since it uses less digits than its factorization.

21222101021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1929281943 (or 1929281929 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21222101021000 its reverse (12010122212), we get a palindrome (21234111143212).

The spelling of 21222101021000 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred one million, twenty-one thousand".