1240122210421 has 16 divisors (see below), whose sum is σ = 1286582169600. Its totient is φ = 1194437462400.

The previous prime is 1240122210391. The next prime is 1240122210443.

1240122210421 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 1240122210421 - 2¹⁵ = 1240122177653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1240122210392 and 1240122210401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240122210121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56156460 + ... + 56178538.

It is an arithmetic number, because the mean of its divisors is an integer number (80411385600).

Almost surely, 2^{1240122210421} is an apocalyptic number.

It is an amenable number.

1240122210421 is a deficient number, since it is larger than the sum of its proper divisors (46459959179).

1240122210421 is a wasteful number, since it uses less digits than its factorization.

1240122210421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39540.

The product of its (nonzero) digits is 512, while the sum is 22.

The spelling of 1240122210421 in words is "one trillion, two hundred forty billion, one hundred twenty-two million, two hundred ten thousand, four hundred twenty-one".