921121122012101 has 8 divisors (see below), whose sum is σ = 922688279841240. Its totient is φ = 919554010762752.

The previous prime is 921121122012059. The next prime is 921121122012163. The reversal of 921121122012101 is 101210221121129.

It can be written as a sum of positive squares in 4 ways, for example, as 359507006848900 + 561614115163201 = 18960670^2 + 23698399^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-921121122012101 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 (921121122017101) 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, 28053971 + ... + 51276383.

It is an arithmetic number, because the mean of its divisors is an integer number (115336034980155).

Almost surely, 2^{921121122012101} is an apocalyptic number.

It is an amenable number.

921121122012101 is a deficient number, since it is larger than the sum of its proper divisors (1567157829139).

921121122012101 is a wasteful number, since it uses less digits than its factorization.

921121122012101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23289895.

The product of its (nonzero) digits is 288, while the sum is 26.

The spelling of 921121122012101 in words is "nine hundred twenty-one trillion, one hundred twenty-one billion, one hundred twenty-two million, twelve thousand, one hundred one".