202102201023 has 8 divisors (see below), whose sum is σ = 269489252736. Its totient is φ = 134724975000.

The previous prime is 202102201003. The next prime is 202102201027. The reversal of 202102201023 is 320102201202.

It is a happy number.

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

It is not a de Polignac number, because 202102201023 - 2⁹ = 202102200511 is a prime.

It is a super-2 number, since 2×202102201023² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202102200993 and 202102201011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202102201027) 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, 2408293 + ... + 2490798.

It is an arithmetic number, because the mean of its divisors is an integer number (33686156592).

Almost surely, 2^202102201023 is an apocalyptic number.

202102201023 is a deficient number, since it is larger than the sum of its proper divisors (67387051713).

202102201023 is a wasteful number, since it uses less digits than its factorization.

202102201023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4912845.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 202102201023 its reverse (320102201202), we get a palindrome (522204402225).

The spelling of 202102201023 in words is "two hundred two billion, one hundred two million, two hundred one thousand, twenty-three".