1400220421431 has 16 divisors (see below), whose sum is σ = 2128841908704. Its totient is φ = 810987393024.

The previous prime is 1400220421387. The next prime is 1400220421433. The reversal of 1400220421431 is 1341240220041.

It is not a de Polignac number, because 1400220421431 - 2⁶ = 1400220421367 is a prime.

It is a super-2 number, since 2×1400220421431² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400220421433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1055972506 + ... + 1055973831.

It is an arithmetic number, because the mean of its divisors is an integer number (133052619294).

Almost surely, 2^{1400220421431} is an apocalyptic number.

1400220421431 is a deficient number, since it is larger than the sum of its proper divisors (728621487273).

1400220421431 is a wasteful number, since it uses less digits than its factorization.

1400220421431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111946370.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 1400220421431 its reverse (1341240220041), we get a palindrome (2741460641472).

The spelling of 1400220421431 in words is "one trillion, four hundred billion, two hundred twenty million, four hundred twenty-one thousand, four hundred thirty-one".