220212012121993 has 2 divisors, whose sum is σ = 220212012121994. Its totient is φ = 220212012121992.

The previous prime is 220212012121951. The next prime is 220212012122017. The reversal of 220212012121993 is 399121210212022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220012786477584 + 199225644409 = 14832828^2 + 446347^2 .

It is a cyclic number.

It is not a de Polignac number, because 220212012121993 - 2³⁷ = 220074573168521 is a prime.

It is not a weakly prime, because it can be changed into another prime (220212012121193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110106006060996 + 110106006060997.

It is an arithmetic number, because the mean of its divisors is an integer number (110106006060997).

Almost surely, 2^{220212012121993} is an apocalyptic number.

It is an amenable number.

220212012121993 is a deficient number, since it is larger than the sum of its proper divisors (1).

220212012121993 is an equidigital number, since it uses as much as digits as its factorization.

220212012121993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 37.

The spelling of 220212012121993 in words is "two hundred twenty trillion, two hundred twelve billion, twelve million, one hundred twenty-one thousand, nine hundred ninety-three".