102010201022021 has 4 divisors (see below), whose sum is σ = 102010223705292. Its totient is φ = 102010178338752.

The previous prime is 102010201022011. The next prime is 102010201022027. The reversal of 102010201022021 is 120220102010201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11334365889025 + 90675835132996 = 3366655^2 + 9522386^2 .

It is a cyclic number.

It is not a de Polignac number, because 102010201022021 - 2⁴² = 97612154510917 is a prime.

It is a super-2 number, since 2×102010201022021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102010201021987 and 102010201022005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102010201022027) 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, 2068730 + ... + 14432603.

It is an arithmetic number, because the mean of its divisors is an integer number (25502555926323).

Almost surely, 2^{102010201022021} is an apocalyptic number.

It is an amenable number.

102010201022021 is a deficient number, since it is larger than the sum of its proper divisors (22683271).

102010201022021 is an equidigital number, since it uses as much as digits as its factorization.

102010201022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22683270.

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

Adding to 102010201022021 its reverse (120220102010201), we get a palindrome (222230303032222).

The spelling of 102010201022021 in words is "one hundred two trillion, ten billion, two hundred one million, twenty-two thousand, twenty-one".