2210121023021 has 2 divisors, whose sum is σ = 2210121023022. Its totient is φ = 2210121023020.

The previous prime is 2210121023009. The next prime is 2210121023027. The reversal of 2210121023021 is 1203201210122.

2210121023021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1643434261225 + 566686761796 = 1281965^2 + 752786^2 .

It is a cyclic number.

It is not a de Polignac number, because 2210121023021 - 2³⁰ = 2209047281197 is a prime.

It is a super-2 number, since 2×2210121023021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2210121023027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105060511510 + 1105060511511.

It is an arithmetic number, because the mean of its divisors is an integer number (1105060511511).

Almost surely, 2^{2210121023021} is an apocalyptic number.

It is an amenable number.

2210121023021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2210121023021 is an equidigital number, since it uses as much as digits as its factorization.

2210121023021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 2210121023021 its reverse (1203201210122), we get a palindrome (3413322233143).

The spelling of 2210121023021 in words is "two trillion, two hundred ten billion, one hundred twenty-one million, twenty-three thousand, twenty-one".