221010101020002 has 24 divisors (see below), whose sum is σ = 514186765639056. Its totient is φ = 63145743148488.

The previous prime is 221010101019979. The next prime is 221010101020043. The reversal of 221010101020002 is 200020101010122.

It is a self number, because there is not a number n which added to its sum of digits gives 221010101020002.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 375867518448 + ... + 375867519035.

It is an arithmetic number, because the mean of its divisors is an integer number (21424448568294).

Almost surely, 2^{221010101020002} is an apocalyptic number.

221010101020002 is an abundant number, since it is smaller than the sum of its proper divisors (293176664619054).

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

221010101020002 is a wasteful number, since it uses less digits than its factorization.

221010101020002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751735037502 (or 751735037495 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 221010101020002 its reverse (200020101010122), we get a palindrome (421030202030124).

The spelling of 221010101020002 in words is "two hundred twenty-one trillion, ten billion, one hundred one million, twenty thousand, two".