2140223211421 has 2 divisors, whose sum is σ = 2140223211422. Its totient is φ = 2140223211420.

The previous prime is 2140223211409. The next prime is 2140223211481. The reversal of 2140223211421 is 1241123220412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1688598890521 + 451624320900 = 1299461^2 + 672030^2 .

It is a cyclic number.

It is not a de Polignac number, because 2140223211421 - 2⁷ = 2140223211293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2140223211481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070111605710 + 1070111605711.

It is an arithmetic number, because the mean of its divisors is an integer number (1070111605711).

Almost surely, 2^{2140223211421} is an apocalyptic number.

It is an amenable number.

2140223211421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140223211421 is an equidigital number, since it uses as much as digits as its factorization.

2140223211421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 2140223211421 its reverse (1241123220412), we get a palindrome (3381346431833).

The spelling of 2140223211421 in words is "two trillion, one hundred forty billion, two hundred twenty-three million, two hundred eleven thousand, four hundred twenty-one".