1401212212091 has 2 divisors, whose sum is σ = 1401212212092. Its totient is φ = 1401212212090.

The previous prime is 1401212212067. The next prime is 1401212212111. The reversal of 1401212212091 is 1902122121041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1401212212091 - 2³⁴ = 1384032342907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1401212212091.

It is not a weakly prime, because it can be changed into another prime (1401212212031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700606106045 + 700606106046.

It is an arithmetic number, because the mean of its divisors is an integer number (700606106046).

Almost surely, 2^{1401212212091} is an apocalyptic number.

1401212212091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401212212091 is an equidigital number, since it uses as much as digits as its factorization.

1401212212091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 1401212212091 in words is "one trillion, four hundred one billion, two hundred twelve million, two hundred twelve thousand, ninety-one".