21012022022000 has 640 divisors, whose sum is σ = 54648918245376. Its totient is φ = 7800192000000.

The previous prime is 21012022021979. The next prime is 21012022022077. The reversal of 21012022022000 is 22022021012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 57253465817 + ... + 57253466183.

Almost surely, 2^{21012022022000} is an apocalyptic number.

21012022022000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21012022022000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27324459122688).

21012022022000 is an abundant number, since it is smaller than the sum of its proper divisors (33636896223376).

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

21012022022000 is a wasteful number, since it uses less digits than its factorization.

21012022022000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786 (or 770 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 21012022022000 its reverse (22022021012), we get a palindrome (21034044043012).

The spelling of 21012022022000 in words is "twenty-one trillion, twelve billion, twenty-two million, twenty-two thousand".