202101002021 has 8 divisors (see below), whose sum is σ = 204878017344. Its totient is φ = 199324216800.

The previous prime is 202101001987. The next prime is 202101002027. The reversal of 202101002021 is 120200101202.

It is a happy number.

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 202101002021 - 2⁶ = 202101001957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202101001993 and 202101002011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202101002027) 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, 2465546 + ... + 2546196.

It is an arithmetic number, because the mean of its divisors is an integer number (25609752168).

Almost surely, 2^202101002021 is an apocalyptic number.

It is an amenable number.

202101002021 is a deficient number, since it is larger than the sum of its proper divisors (2777015323).

202101002021 is an equidigital number, since it uses as much as digits as its factorization.

202101002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115051.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 202101002021 its reverse (120200101202), we get a palindrome (322301103223).

The spelling of 202101002021 in words is "two hundred two billion, one hundred one million, two thousand, twenty-one".