202211012021 has 8 divisors (see below), whose sum is σ = 214109829144. Its totient is φ = 190312645120.

The previous prime is 202211011997. The next prime is 202211012053. The reversal of 202211012021 is 120210112202.

It can be written as a sum of positive squares in 4 ways, for example, as 8633011396 + 193578000625 = 92914^2 + 439975^2 .

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 202211012021 - 2⁶ = 202211011957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202211011987 and 202211012005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202211012221) 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, 1370771 + ... + 1511103.

It is an arithmetic number, because the mean of its divisors is an integer number (26763728643).

Almost surely, 2^202211012021 is an apocalyptic number.

It is an amenable number.

202211012021 is a deficient number, since it is larger than the sum of its proper divisors (11898817123).

202211012021 is a wasteful number, since it uses less digits than its factorization.

202211012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225111.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 202211012021 its reverse (120210112202), we get a palindrome (322421124223).

The spelling of 202211012021 in words is "two hundred two billion, two hundred eleven million, twelve thousand, twenty-one".