221021210010102 has 32 divisors (see below), whose sum is σ = 443071161713664. Its totient is φ = 73502282131200.

The previous prime is 221021210010089. The next prime is 221021210010173. The reversal of 221021210010102 is 201010012120122.

It is a super-2 number, since 2×221021210010102² (a number of 29 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, 592568727 + ... + 592941597.

It is an arithmetic number, because the mean of its divisors is an integer number (13845973803552).

Almost surely, 2^{221021210010102} is an apocalyptic number.

221021210010102 is an abundant number, since it is smaller than the sum of its proper divisors (222049951703562).

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

221021210010102 is a wasteful number, since it uses less digits than its factorization.

221021210010102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602524.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221021210010102 its reverse (201010012120122), we get a palindrome (422031222130224).

The spelling of 221021210010102 in words is "two hundred twenty-one trillion, twenty-one billion, two hundred ten million, ten thousand, one hundred two".