2101220293 has 2 divisors, whose sum is σ = 2101220294. Its totient is φ = 2101220292.

The previous prime is 2101220287. The next prime is 2101220369. The reversal of 2101220293 is 3920221012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2094160644 + 7059649 = 45762^2 + 2657^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2101220293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101220243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050610146 + 1050610147.

It is an arithmetic number, because the mean of its divisors is an integer number (1050610147).

Almost surely, 2^2101220293 is an apocalyptic number.

It is an amenable number.

2101220293 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101220293 is an equidigital number, since it uses as much as digits as its factorization.

2101220293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 2101220293 is about 45839.0695040813. The cubic root of 2101220293 is about 1280.8271616861.

The spelling of 2101220293 in words is "two billion, one hundred one million, two hundred twenty thousand, two hundred ninety-three".