2221402154087 has 2 divisors, whose sum is σ = 2221402154088. Its totient is φ = 2221402154086.

The previous prime is 2221402154057. The next prime is 2221402154107. The reversal of 2221402154087 is 7804512041222.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2221402154087 - 2²⁸ = 2221133718631 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2221402154087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221402154057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110701077043 + 1110701077044.

It is an arithmetic number, because the mean of its divisors is an integer number (1110701077044).

Almost surely, 2^{2221402154087} is an apocalyptic number.

2221402154087 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221402154087 is an equidigital number, since it uses as much as digits as its factorization.

2221402154087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71680, while the sum is 38.

The spelling of 2221402154087 in words is "two trillion, two hundred twenty-one billion, four hundred two million, one hundred fifty-four thousand, eighty-seven".