221274854958 has 16 divisors (see below), whose sum is σ = 444796157520. Its totient is φ = 73383877056.

The previous prime is 221274854953. The next prime is 221274855007. The reversal of 221274854958 is 859458472122.

It is a super-2 number, since 2×221274854958² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221274854898 and 221274854907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221274854951) 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, 93600703 + ... + 93603066.

It is an arithmetic number, because the mean of its divisors is an integer number (27799759845).

Almost surely, 2^221274854958 is an apocalyptic number.

221274854958 is an abundant number, since it is smaller than the sum of its proper divisors (223521302562).

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

221274854958 is a wasteful number, since it uses less digits than its factorization.

221274854958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187203971.

The product of its digits is 12902400, while the sum is 57.

The spelling of 221274854958 in words is "two hundred twenty-one billion, two hundred seventy-four million, eight hundred fifty-four thousand, nine hundred fifty-eight".