10002121021237 has 2 divisors, whose sum is σ = 10002121021238. Its totient is φ = 10002121021236.

The previous prime is 10002121021199. The next prime is 10002121021261. The reversal of 10002121021237 is 73212012120001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6544458869796 + 3457662151441 = 2558214^2 + 1859479^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10002121021237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10002121021267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5001060510618 + 5001060510619.

It is an arithmetic number, because the mean of its divisors is an integer number (5001060510619).

Almost surely, 2^{10002121021237} is an apocalyptic number.

It is an amenable number.

10002121021237 is a deficient number, since it is larger than the sum of its proper divisors (1).

10002121021237 is an equidigital number, since it uses as much as digits as its factorization.

10002121021237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 22.

Adding to 10002121021237 its reverse (73212012120001), we get a palindrome (83214133141238).

The spelling of 10002121021237 in words is "ten trillion, two billion, one hundred twenty-one million, twenty-one thousand, two hundred thirty-seven".