2011202220961 has 2 divisors, whose sum is σ = 2011202220962. Its totient is φ = 2011202220960.

The previous prime is 2011202220943. The next prime is 2011202221019. The reversal of 2011202220961 is 1690222021102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1991714060961 + 19488160000 = 1411281^2 + 139600^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011202220961 - 2¹⁷ = 2011202089889 is a prime.

It is not a weakly prime, because it can be changed into another prime (2011202220901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005601110480 + 1005601110481.

It is an arithmetic number, because the mean of its divisors is an integer number (1005601110481).

Almost surely, 2^{2011202220961} is an apocalyptic number.

It is an amenable number.

2011202220961 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011202220961 is an equidigital number, since it uses as much as digits as its factorization.

2011202220961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The spelling of 2011202220961 in words is "two trillion, eleven billion, two hundred two million, two hundred twenty thousand, nine hundred sixty-one".