921242120001 has 32 divisors (see below), whose sum is σ = 1409701478400. Its totient is φ = 524214244800.

The previous prime is 921242119999. The next prime is 921242120003. The reversal of 921242120001 is 100021242129.

It is an interprime number because it is at equal distance from previous prime (921242119999) and next prime (921242120003).

It is not a de Polignac number, because 921242120001 - 2¹ = 921242119999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (921242120003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5258976 + ... + 5431326.

It is an arithmetic number, because the mean of its divisors is an integer number (44053171200).

Almost surely, 2^921242120001 is an apocalyptic number.

It is an amenable number.

921242120001 is a deficient number, since it is larger than the sum of its proper divisors (488459358399).

921242120001 is a wasteful number, since it uses less digits than its factorization.

921242120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173429.

The product of its (nonzero) digits is 576, while the sum is 24.

The spelling of 921242120001 in words is "nine hundred twenty-one billion, two hundred forty-two million, one hundred twenty thousand, one".