2126215031421 has 8 divisors (see below), whose sum is σ = 3053026711840. Its totient is φ = 1308440019312.

The previous prime is 2126215031419. The next prime is 2126215031441. The reversal of 2126215031421 is 1241305126212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2126215031421 - 2¹ = 2126215031419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2126215031441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27259167031 + ... + 27259167108.

It is an arithmetic number, because the mean of its divisors is an integer number (381628338980).

Almost surely, 2^{2126215031421} is an apocalyptic number.

It is an amenable number.

2126215031421 is a deficient number, since it is larger than the sum of its proper divisors (926811680419).

2126215031421 is a wasteful number, since it uses less digits than its factorization.

2126215031421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54518334155.

The product of its (nonzero) digits is 5760, while the sum is 30.

The spelling of 2126215031421 in words is "two trillion, one hundred twenty-six billion, two hundred fifteen million, thirty-one thousand, four hundred twenty-one".