921312413901 has 36 divisors (see below), whose sum is σ = 1466340382780. Its totient is φ = 557005680000.

The previous prime is 921312413899. The next prime is 921312413921. The reversal of 921312413901 is 109314213129.

It is a happy number.

921312413901 is a `hidden beast` number, since 9 + 21 + 3 + 1 + 241 + 390 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 747818505225 + 173493908676 = 864765^2 + 416526^2 .

It is not a de Polignac number, because 921312413901 - 2¹ = 921312413899 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (921312413921) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 588850 + ... + 1479651.

Almost surely, 2^921312413901 is an apocalyptic number.

It is an amenable number.

921312413901 is a deficient number, since it is larger than the sum of its proper divisors (545027968879).

921312413901 is a wasteful number, since it uses less digits than its factorization.

921312413901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2068938 (or 2068924 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The spelling of 921312413901 in words is "nine hundred twenty-one billion, three hundred twelve million, four hundred thirteen thousand, nine hundred one".