221107040838 has 24 divisors (see below), whose sum is σ = 479591158176. Its totient is φ = 73621438800.

The previous prime is 221107040747. The next prime is 221107040839. The reversal of 221107040838 is 838040701122.

221107040838 is a `hidden beast` number, since 2 + 211 + 0 + 7 + 0 + 408 + 38 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221107040839) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6725493 + ... + 6758288.

It is an arithmetic number, because the mean of its divisors is an integer number (19982964924).

Almost surely, 2^221107040838 is an apocalyptic number.

221107040838 is an abundant number, since it is smaller than the sum of its proper divisors (258484117338).

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

221107040838 is a wasteful number, since it uses less digits than its factorization.

221107040838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13484700 (or 13484697 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The spelling of 221107040838 in words is "two hundred twenty-one billion, one hundred seven million, forty thousand, eight hundred thirty-eight".