202100101122021 has 8 divisors (see below), whose sum is σ = 269468608739520. Its totient is φ = 134732497126272.

The previous prime is 202100101121983. The next prime is 202100101122077. The reversal of 202100101122021 is 120221101001202.

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

It is not a de Polignac number, because 202100101122021 - 2²² = 202100096927717 is a prime.

It is a super-2 number, since 2×202100101122021² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202100101122421) 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, 225383401 + ... + 226278318.

It is an arithmetic number, because the mean of its divisors is an integer number (33683576092440).

Almost surely, 2^{202100101122021} is an apocalyptic number.

It is an amenable number.

202100101122021 is a deficient number, since it is larger than the sum of its proper divisors (67368507617499).

202100101122021 is a wasteful number, since it uses less digits than its factorization.

202100101122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451810875.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 202100101122021 its reverse (120221101001202), we get a palindrome (322321202123223).

The spelling of 202100101122021 in words is "two hundred two trillion, one hundred billion, one hundred one million, one hundred twenty-two thousand, twenty-one".