221657221403030 has 16 divisors (see below), whose sum is σ = 455980569743520. Its totient is φ = 75996761623872.

The previous prime is 221657221403021. The next prime is 221657221403039. The reversal of 221657221403030 is 30304122756122.

221657221403030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (221657221403021) and next prime (221657221403039).

It is a super-2 number, since 2×221657221403030² (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 (221657221403039) 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, 1583265867095 + ... + 1583265867234.

It is an arithmetic number, because the mean of its divisors is an integer number (28498785608970).

Almost surely, 2^{221657221403030} is an apocalyptic number.

221657221403030 is an abundant number, since it is smaller than the sum of its proper divisors (234323348340490).

221657221403030 is a wasteful number, since it uses less digits than its factorization.

221657221403030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3166531734343.

The product of its (nonzero) digits is 120960, while the sum is 38.

The spelling of 221657221403030 in words is "two hundred twenty-one trillion, six hundred fifty-seven billion, two hundred twenty-one million, four hundred three thousand, thirty".