21011022201002 has 16 divisors (see below), whose sum is σ = 32286697058952. Its totient is φ = 10248813146880.

The previous prime is 21011022200957. The next prime is 21011022201019. The reversal of 21011022201002 is 20010222011012.

It can be written as a sum of positive squares in 4 ways, for example, as 9631457764681 + 11379564436321 = 3103459^2 + 3373361^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4006643 + ... + 7620710.

Almost surely, 2^{21011022201002} is an apocalyptic number.

21011022201002 is a deficient number, since it is larger than the sum of its proper divisors (11275674857950).

21011022201002 is a wasteful number, since it uses less digits than its factorization.

21011022201002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11649433.

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

Adding to 21011022201002 its reverse (20010222011012), we get a palindrome (41021244212014).

The spelling of 21011022201002 in words is "twenty-one trillion, eleven billion, twenty-two million, two hundred one thousand, two".