107214921 has 20 divisors (see below), whose sum is σ = 174722064. Its totient is φ = 64978200.

The previous prime is 107214911. The next prime is 107214923. The reversal of 107214921 is 129412701.

It is not a de Polignac number, because 107214921 - 2⁵ = 107214889 is a prime.

It is a super-2 number, since 2×107214921² = 22990078570072482, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (107214923) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 59275 + ... + 61056.

Almost surely, 2^107214921 is an apocalyptic number.

107214921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

107214921 is a deficient number, since it is larger than the sum of its proper divisors (67507143).

107214921 is a wasteful number, since it uses less digits than its factorization.

107214921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120354 (or 120345 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 107214921 is about 10354.4638200150. The cubic root of 107214921 is about 475.0635866860.

The spelling of 107214921 in words is "one hundred seven million, two hundred fourteen thousand, nine hundred twenty-one".