2101202201951 has 2 divisors, whose sum is σ = 2101202201952. Its totient is φ = 2101202201950.

The previous prime is 2101202201909. The next prime is 2101202202019. The reversal of 2101202201951 is 1591022021012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2101202201951 - 2¹⁰ = 2101202200927 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2101202201951.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101202201851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050601100975 + 1050601100976.

It is an arithmetic number, because the mean of its divisors is an integer number (1050601100976).

Almost surely, 2^{2101202201951} is an apocalyptic number.

2101202201951 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101202201951 is an equidigital number, since it uses as much as digits as its factorization.

2101202201951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 26.

Adding to 2101202201951 its reverse (1591022021012), we get a palindrome (3692224222963).

The spelling of 2101202201951 in words is "two trillion, one hundred one billion, two hundred two million, two hundred one thousand, nine hundred fifty-one".