60421221631 has 2 divisors, whose sum is σ = 60421221632. Its totient is φ = 60421221630.

The previous prime is 60421221613. The next prime is 60421221671. The reversal of 60421221631 is 13612212406.

Together with previous prime (60421221613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 60421221631 - 2¹⁷ = 60421090559 is a prime.

It is a super-2 number, since 2×60421221631² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 60421221631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60421221611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30210610815 + 30210610816.

It is an arithmetic number, because the mean of its divisors is an integer number (30210610816).

Almost surely, 2^60421221631 is an apocalyptic number.

60421221631 is a deficient number, since it is larger than the sum of its proper divisors (1).

60421221631 is an equidigital number, since it uses as much as digits as its factorization.

60421221631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 60421221631 in words is "sixty billion, four hundred twenty-one million, two hundred twenty-one thousand, six hundred thirty-one".