101221002023 has 4 divisors (see below), whose sum is σ = 101614858320. Its totient is φ = 100827145728.

The previous prime is 101221001989. The next prime is 101221002041. The reversal of 101221002023 is 320200122101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101221002023 - 2⁸ = 101221001767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101221001989 and 101221002007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101221002073) 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, 196927763 + ... + 196928276.

It is an arithmetic number, because the mean of its divisors is an integer number (25403714580).

Almost surely, 2^101221002023 is an apocalyptic number.

101221002023 is a deficient number, since it is larger than the sum of its proper divisors (393856297).

101221002023 is an equidigital number, since it uses as much as digits as its factorization.

101221002023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393856296.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 101221002023 its reverse (320200122101), we get a palindrome (421421124124).

The spelling of 101221002023 in words is "one hundred one billion, two hundred twenty-one million, two thousand, twenty-three".