2211122021021 has 4 divisors (see below), whose sum is σ = 2211225409344. Its totient is φ = 2211018632700.

The previous prime is 2211122020973. The next prime is 2211122021071. The reversal of 2211122021021 is 1201202211122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2211122021021 - 2³⁴ = 2193942151837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211122021071) 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, 51662075 + ... + 51704856.

It is an arithmetic number, because the mean of its divisors is an integer number (552806352336).

Almost surely, 2^{2211122021021} is an apocalyptic number.

It is an amenable number.

2211122021021 is a deficient number, since it is larger than the sum of its proper divisors (103388323).

2211122021021 is a wasteful number, since it uses less digits than its factorization.

2211122021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103388322.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2211122021021 its reverse (1201202211122), we get a palindrome (3412324232143).

The spelling of 2211122021021 in words is "two trillion, two hundred eleven billion, one hundred twenty-two million, twenty-one thousand, twenty-one".