202001121021 has 8 divisors (see below), whose sum is σ = 307811232064. Its totient is φ = 115429212000.

The previous prime is 202001120989. The next prime is 202001121053. The reversal of 202001121021 is 120121100202.

It is an interprime number because it is at equal distance from previous prime (202001120989) and next prime (202001121053).

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

It is not a de Polignac number, because 202001121021 - 2⁵ = 202001120989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202001120988 and 202001121006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202001111021) 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, 4809550480 + ... + 4809550521.

It is an arithmetic number, because the mean of its divisors is an integer number (38476404008).

Almost surely, 2^202001121021 is an apocalyptic number.

202001121021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

202001121021 is a deficient number, since it is larger than the sum of its proper divisors (105810111043).

202001121021 is an equidigital number, since it uses as much as digits as its factorization.

202001121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9619101011.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 202001121021 its reverse (120121100202), we get a palindrome (322122221223).

The spelling of 202001121021 in words is "two hundred two billion, one million, one hundred twenty-one thousand, twenty-one".