202001202021 has 8 divisors (see below), whose sum is σ = 269340171840. Its totient is φ = 134664850112.

The previous prime is 202001201989. The next prime is 202001202023. The reversal of 202001202021 is 120202100202.

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 202001202021 - 2⁵ = 202001201989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202001201988 and 202001202006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202001202023) 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, 466740 + ... + 788573.

It is an arithmetic number, because the mean of its divisors is an integer number (33667521480).

Almost surely, 2^202001202021 is an apocalyptic number.

It is an amenable number.

202001202021 is a deficient number, since it is larger than the sum of its proper divisors (67338969819).

202001202021 is a wasteful number, since it uses less digits than its factorization.

202001202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308955.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 202001202021 its reverse (120202100202), we get a palindrome (322203302223).

It can be divided in two parts, 20200 and 1202021, that added together give a palindrome (1222221).

The spelling of 202001202021 in words is "two hundred two billion, one million, two hundred two thousand, twenty-one".