202101210012121 has 8 divisors (see below), whose sum is σ = 231004993861760. Its totient is φ = 173205471767328.

The previous prime is 202101210012101. The next prime is 202101210012139. The reversal of 202101210012121 is 121210012101202.

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

It is not a de Polignac number, because 202101210012121 - 2²⁹ = 202100673141209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202101210012095 and 202101210012104.

It is not an unprimeable number, because it can be changed into a prime (202101210012101) 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, 2011347381 + ... + 2011447858.

It is an arithmetic number, because the mean of its divisors is an integer number (28875624232720).

Almost surely, 2^{202101210012121} is an apocalyptic number.

It is an amenable number.

202101210012121 is a deficient number, since it is larger than the sum of its proper divisors (28903783849639).

202101210012121 is an equidigital number, since it uses as much as digits as its factorization.

202101210012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4022802423.

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

Adding to 202101210012121 its reverse (121210012101202), we get a palindrome (323311222113323).

The spelling of 202101210012121 in words is "two hundred two trillion, one hundred one billion, two hundred ten million, twelve thousand, one hundred twenty-one".