1021101023 has 16 divisors (see below), whose sum is σ = 1071252000. Its totient is φ = 972395520.

The previous prime is 1021101019. The next prime is 1021101041. The reversal of 1021101023 is 3201011201.

It is not a de Polignac number, because 1021101023 - 2² = 1021101019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021100995 and 1021101013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021101043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 359015 + ... + 361847.

It is an arithmetic number, because the mean of its divisors is an integer number (66953250).

Almost surely, 2^1021101023 is an apocalyptic number.

1021101023 is a deficient number, since it is larger than the sum of its proper divisors (50150977).

1021101023 is a wasteful number, since it uses less digits than its factorization.

1021101023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3082.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1021101023 is about 31954.6713799407. The cubic root of 1021101023 is about 1006.9847736811.

Adding to 1021101023 its reverse (3201011201), we get a palindrome (4222112224).

The spelling of 1021101023 in words is "one billion, twenty-one million, one hundred one thousand, twenty-three".