10020012212251 has 2 divisors, whose sum is σ = 10020012212252. Its totient is φ = 10020012212250.

The previous prime is 10020012212213. The next prime is 10020012212261. The reversal of 10020012212251 is 15221221002001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10020012212251 - 2⁹ = 10020012211739 is a prime.

It is not a weakly prime, because it can be changed into another prime (10020012212261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010006106125 + 5010006106126.

It is an arithmetic number, because the mean of its divisors is an integer number (5010006106126).

Almost surely, 2^{10020012212251} is an apocalyptic number.

10020012212251 is a deficient number, since it is larger than the sum of its proper divisors (1).

10020012212251 is an equidigital number, since it uses as much as digits as its factorization.

10020012212251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 10020012212251 its reverse (15221221002001), we get a palindrome (25241233214252).

The spelling of 10020012212251 in words is "ten trillion, twenty billion, twelve million, two hundred twelve thousand, two hundred fifty-one".