202122101021011 has 4 divisors (see below), whose sum is σ = 205138848797512. Its totient is φ = 199105353244512.

The previous prime is 202122101020993. The next prime is 202122101021039. The reversal of 202122101021011 is 110120101221202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 202122101021011 - 2²¹ = 202122098923859 is a prime.

It is a super-2 number, since 2×202122101021011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202122101028011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1508373888150 + ... + 1508373888283.

It is an arithmetic number, because the mean of its divisors is an integer number (51284712199378).

Almost surely, 2^{202122101021011} is an apocalyptic number.

202122101021011 is a deficient number, since it is larger than the sum of its proper divisors (3016747776501).

202122101021011 is an equidigital number, since it uses as much as digits as its factorization.

202122101021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3016747776500.

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

Adding to 202122101021011 its reverse (110120101221202), we get a palindrome (312242202242213).

The spelling of 202122101021011 in words is "two hundred two trillion, one hundred twenty-two billion, one hundred one million, twenty-one thousand, eleven".