101221100983 has 4 divisors (see below), whose sum is σ = 101224936728. Its totient is φ = 101217265240.

The previous prime is 101221100977. The next prime is 101221101001. The reversal of 101221100983 is 389001122101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 389001122101 = 29443 ⋅13212007.

It is a cyclic number.

It is not a de Polignac number, because 101221100983 - 2²⁹ = 100684230071 is a prime.

It is a super-2 number, since 2×101221100983² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101221100963) 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, 1878013 + ... + 1931158.

It is an arithmetic number, because the mean of its divisors is an integer number (25306234182).

Almost surely, 2^101221100983 is an apocalyptic number.

101221100983 is a deficient number, since it is larger than the sum of its proper divisors (3835745).

101221100983 is an equidigital number, since it uses as much as digits as its factorization.

101221100983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3835744.

The product of its (nonzero) digits is 864, while the sum is 28.

The spelling of 101221100983 in words is "one hundred one billion, two hundred twenty-one million, one hundred thousand, nine hundred eighty-three".