202101112102021 has 8 divisors (see below), whose sum is σ = 222656850777888. Its totient is φ = 181909191810000.

The previous prime is 202101112102003. The next prime is 202101112102063. The reversal of 202101112102021 is 120201211101202.

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

It is a cyclic number.

It is not a de Polignac number, because 202101112102021 - 2⁷ = 202101112101893 is a prime.

It is a super-2 number, since 2×202101112102021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202101112101986 and 202101112102004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202101112102321) 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, 90954594795 + ... + 90954597016.

It is an arithmetic number, because the mean of its divisors is an integer number (27832106347236).

Almost surely, 2^{202101112102021} is an apocalyptic number.

It is an amenable number.

202101112102021 is a deficient number, since it is larger than the sum of its proper divisors (20555738675867).

202101112102021 is a wasteful number, since it uses less digits than its factorization.

202101112102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181909191923.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 202101112102021 its reverse (120201211101202), we get a palindrome (322302323203223).

The spelling of 202101112102021 in words is "two hundred two trillion, one hundred one billion, one hundred twelve million, one hundred two thousand, twenty-one".