221422001527252 has 6 divisors (see below), whose sum is σ = 387488502672698. Its totient is φ = 110711000763624.

The previous prime is 221422001527211. The next prime is 221422001527313. The reversal of 221422001527252 is 252725100224122.

It can be written as a sum of positive squares in only one way, i.e., 137544905026116 + 83877096501136 = 11727954^2 + 9158444^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27677750190903 + ... + 27677750190910.

Almost surely, 2^{221422001527252} is an apocalyptic number.

It is an amenable number.

221422001527252 is a deficient number, since it is larger than the sum of its proper divisors (166066501145446).

221422001527252 is a wasteful number, since it uses less digits than its factorization.

221422001527252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55355500381817 (or 55355500381815 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 37.

The spelling of 221422001527252 in words is "two hundred twenty-one trillion, four hundred twenty-two billion, one million, five hundred twenty-seven thousand, two hundred fifty-two".