21120110097 has 8 divisors (see below), whose sum is σ = 28166754144. Its totient is φ = 14076769728.

The previous prime is 21120110083. The next prime is 21120110107. The reversal of 21120110097 is 79001102112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21120110097 - 2²³ = 21111721489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21120110027) 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, 810963 + ... + 836600.

It is an arithmetic number, because the mean of its divisors is an integer number (3520844268).

Almost surely, 2^21120110097 is an apocalyptic number.

It is an amenable number.

21120110097 is a deficient number, since it is larger than the sum of its proper divisors (7046644047).

21120110097 is a wasteful number, since it uses less digits than its factorization.

21120110097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1651839.

The product of its (nonzero) digits is 252, while the sum is 24.

The spelling of 21120110097 in words is "twenty-one billion, one hundred twenty million, one hundred ten thousand, ninety-seven".