21001032201102 has 32 divisors (see below), whose sum is σ = 42204670987392. Its totient is φ = 6966637424544.

The previous prime is 21001032201059. The next prime is 21001032201157. The reversal of 21001032201102 is 20110223010012.

It is a super-2 number, since 2×21001032201102² (a number of 27 digits) contains 22 as substring.

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, 6265188 + ... + 9014135.

It is an arithmetic number, because the mean of its divisors is an integer number (1318895968356).

Almost surely, 2^{21001032201102} is an apocalyptic number.

21001032201102 is an abundant number, since it is smaller than the sum of its proper divisors (21203638786290).

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

21001032201102 is a wasteful number, since it uses less digits than its factorization.

21001032201102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15280432.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21001032201102 its reverse (20110223010012), we get a palindrome (41111255211114).

The spelling of 21001032201102 in words is "twenty-one trillion, one billion, thirty-two million, two hundred one thousand, one hundred two".