421052121037 has 2 divisors, whose sum is σ = 421052121038. Its totient is φ = 421052121036.

The previous prime is 421052121023. The next prime is 421052121121. The reversal of 421052121037 is 730121250124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 304763618916 + 116288502121 = 552054^2 + 341011^2 .

It is a cyclic number.

It is not a de Polignac number, because 421052121037 - 2¹⁵ = 421052088269 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421052120996 and 421052121014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421052121137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210526060518 + 210526060519.

It is an arithmetic number, because the mean of its divisors is an integer number (210526060519).

Almost surely, 2^421052121037 is an apocalyptic number.

It is an amenable number.

421052121037 is a deficient number, since it is larger than the sum of its proper divisors (1).

421052121037 is an equidigital number, since it uses as much as digits as its factorization.

421052121037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 28.

The spelling of 421052121037 in words is "four hundred twenty-one billion, fifty-two million, one hundred twenty-one thousand, thirty-seven".