21246121374107 has 16 divisors (see below), whose sum is σ = 24670515589632. Its totient is φ = 17921289916800.

The previous prime is 21246121374103. The next prime is 21246121374119. The reversal of 21246121374107 is 70147312164212.

It is a cyclic number.

It is not a de Polignac number, because 21246121374107 - 2² = 21246121374103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21246121374103) 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, 93813998 + ... + 94040195.

It is an arithmetic number, because the mean of its divisors is an integer number (1541907224352).

Almost surely, 2^{21246121374107} is an apocalyptic number.

21246121374107 is a deficient number, since it is larger than the sum of its proper divisors (3424394215525).

21246121374107 is a wasteful number, since it uses less digits than its factorization.

21246121374107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187854458.

The product of its (nonzero) digits is 112896, while the sum is 41.

The spelling of 21246121374107 in words is "twenty-one trillion, two hundred forty-six billion, one hundred twenty-one million, three hundred seventy-four thousand, one hundred seven".