221011109974 has 16 divisors (see below), whose sum is σ = 339171660288. Its totient is φ = 107962243432.

The previous prime is 221011109971. The next prime is 221011109981. The reversal of 221011109974 is 479901110122.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221011109971) 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, 2035162 + ... + 2141005.

It is an arithmetic number, because the mean of its divisors is an integer number (21198228768).

Almost surely, 2^221011109974 is an apocalyptic number.

221011109974 is a deficient number, since it is larger than the sum of its proper divisors (118160550314).

221011109974 is a wasteful number, since it uses less digits than its factorization.

221011109974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4176779.

The product of its (nonzero) digits is 9072, while the sum is 37.

The spelling of 221011109974 in words is "two hundred twenty-one billion, eleven million, one hundred nine thousand, nine hundred seventy-four".