2141022421 has 4 divisors (see below), whose sum is σ = 2156425600. Its totient is φ = 2125619244.

The previous prime is 2141022361. The next prime is 2141022431. The reversal of 2141022421 is 1242201412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2141022421 - 2⁷ = 2141022293 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 (2141022431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7701381 + ... + 7701658.

It is an arithmetic number, because the mean of its divisors is an integer number (539106400).

Almost surely, 2^2141022421 is an apocalyptic number.

It is an amenable number.

2141022421 is a deficient number, since it is larger than the sum of its proper divisors (15403179).

2141022421 is a wasteful number, since it uses less digits than its factorization.

2141022421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15403178.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 2141022421 is about 46271.1834838920. The cubic root of 2141022421 is about 1288.8639359982.

Adding to 2141022421 its reverse (1242201412), we get a palindrome (3383223833).

The spelling of 2141022421 in words is "two billion, one hundred forty-one million, twenty-two thousand, four hundred twenty-one".