21022011002000 has 160 divisors (see below), whose sum is σ = 51565377247488. Its totient is φ = 8287440000000.

The previous prime is 21022011001993. The next prime is 21022011002017. The reversal of 21022011002000 is 20011022012.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 426117335 + ... + 426166665.

Almost surely, 2^{21022011002000} is an apocalyptic number.

21022011002000 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 21022011002000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25782688623744).

21022011002000 is an abundant number, since it is smaller than the sum of its proper divisors (30543366245488).

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

21022011002000 is a wasteful number, since it uses less digits than its factorization.

21022011002000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52426 (or 52410 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21022011002000 its reverse (20011022012), we get a palindrome (21042022024012).

The spelling of 21022011002000 in words is "twenty-one trillion, twenty-two billion, eleven million, two thousand".