120981922643 has 4 divisors (see below), whose sum is σ = 120989608608. Its totient is φ = 120974236680.

The previous prime is 120981922591. The next prime is 120981922661. The reversal of 120981922643 is 346229189021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346229189021 = 71 ⋅4876467451.

It is a cyclic number.

It is not a de Polignac number, because 120981922643 - 2²⁰ = 120980874067 is a prime.

It is a super-2 number, since 2×120981922643² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120981928643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3819323 + ... + 3850868.

It is an arithmetic number, because the mean of its divisors is an integer number (30247402152).

Almost surely, 2^120981922643 is an apocalyptic number.

120981922643 is a deficient number, since it is larger than the sum of its proper divisors (7685965).

120981922643 is an equidigital number, since it uses as much as digits as its factorization.

120981922643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7685964.

The product of its (nonzero) digits is 373248, while the sum is 47.

The spelling of 120981922643 in words is "one hundred twenty billion, nine hundred eighty-one million, nine hundred twenty-two thousand, six hundred forty-three".