221052030452621 has 8 divisors (see below), whose sum is σ = 227919437759904. Its totient is φ = 214263107800560.

The previous prime is 221052030452611. The next prime is 221052030452657. The reversal of 221052030452621 is 126254030250122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221052030452621 - 2⁶ = 221052030452557 is a prime.

It is a super-2 number, since 2×221052030452621² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221052030452611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19621158086 + ... + 19621169351.

It is an arithmetic number, because the mean of its divisors is an integer number (28489929719988).

Almost surely, 2^{221052030452621} is an apocalyptic number.

It is an amenable number.

221052030452621 is a deficient number, since it is larger than the sum of its proper divisors (6867407307283).

221052030452621 is a wasteful number, since it uses less digits than its factorization.

221052030452621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39242327611.

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 221052030452621 in words is "two hundred twenty-one trillion, fifty-two billion, thirty million, four hundred fifty-two thousand, six hundred twenty-one".