1211102220973 has 2 divisors, whose sum is σ = 1211102220974. Its totient is φ = 1211102220972.

The previous prime is 1211102220961. The next prime is 1211102221003. The reversal of 1211102220973 is 3790222011121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 608395320009 + 602706900964 = 779997^2 + 776342^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211102220973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211102290973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605551110486 + 605551110487.

It is an arithmetic number, because the mean of its divisors is an integer number (605551110487).

Almost surely, 2^{1211102220973} is an apocalyptic number.

It is an amenable number.

1211102220973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211102220973 is an equidigital number, since it uses as much as digits as its factorization.

1211102220973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 31.

The spelling of 1211102220973 in words is "one trillion, two hundred eleven billion, one hundred two million, two hundred twenty thousand, nine hundred seventy-three".