1241204021421 has 32 divisors (see below), whose sum is σ = 2091897577728. Its totient is φ = 637006394880.

The previous prime is 1241204021399. The next prime is 1241204021429.

It is a happy number.

1241204021421 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1241204021421 - 2⁹ = 1241204020909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1241204021391 and 1241204021400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1241204021429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61429560 + ... + 61449761.

It is an arithmetic number, because the mean of its divisors is an integer number (65371799304).

Almost surely, 2^{1241204021421} is an apocalyptic number.

It is an amenable number.

1241204021421 is a deficient number, since it is larger than the sum of its proper divisors (850693556307).

1241204021421 is a wasteful number, since it uses less digits than its factorization.

1241204021421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122879381.

The product of its (nonzero) digits is 1024, while the sum is 24.

The spelling of 1241204021421 in words is "one trillion, two hundred forty-one billion, two hundred four million, twenty-one thousand, four hundred twenty-one".