107188181421 has 16 divisors (see below), whose sum is σ = 144538732800. Its totient is φ = 70648379648.

The previous prime is 107188181393. The next prime is 107188181437. The reversal of 107188181421 is 124181881701.

It is a cyclic number.

It is not a de Polignac number, because 107188181421 - 2²⁵ = 107154626989 is a prime.

It is a super-2 number, since 2×107188181421² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107188181461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3738940 + ... + 3767498.

It is an arithmetic number, because the mean of its divisors is an integer number (9033670800).

Almost surely, 2^107188181421 is an apocalyptic number.

It is an amenable number.

107188181421 is a deficient number, since it is larger than the sum of its proper divisors (37350551379).

107188181421 is a wasteful number, since it uses less digits than its factorization.

107188181421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42708.

The product of its (nonzero) digits is 28672, while the sum is 42.

The spelling of 107188181421 in words is "one hundred seven billion, one hundred eighty-eight million, one hundred eighty-one thousand, four hundred twenty-one".