100721150870 has 24 divisors (see below), whose sum is σ = 185168126304. Its totient is φ = 39428565488.

The previous prime is 100721150867. The next prime is 100721150903. The reversal of 100721150870 is 78051127001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6873011 + ... + 6887649.

It is an arithmetic number, because the mean of its divisors is an integer number (7715338596).

Almost surely, 2^100721150870 is an apocalyptic number.

100721150870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100721150870 is a deficient number, since it is larger than the sum of its proper divisors (84446975434).

100721150870 is an frugal number, since it uses more digits than its factorization.

100721150870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29332 (or 14693 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 32.

Adding to 100721150870 its reverse (78051127001), we get a palindrome (178772277871).

The spelling of 100721150870 in words is "one hundred billion, seven hundred twenty-one million, one hundred fifty thousand, eight hundred seventy".