212222120993 has 2 divisors, whose sum is σ = 212222120994. Its totient is φ = 212222120992.

The previous prime is 212222120987. The next prime is 212222121101. The reversal of 212222120993 is 399021222212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168631779904 + 43590341089 = 410648^2 + 208783^2 .

It is a cyclic number.

It is not a de Polignac number, because 212222120993 - 2⁴ = 212222120977 is a prime.

It is not a weakly prime, because it can be changed into another prime (212222120953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106111060496 + 106111060497.

It is an arithmetic number, because the mean of its divisors is an integer number (106111060497).

Almost surely, 2^212222120993 is an apocalyptic number.

It is an amenable number.

212222120993 is a deficient number, since it is larger than the sum of its proper divisors (1).

212222120993 is an equidigital number, since it uses as much as digits as its factorization.

212222120993 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 35.

The spelling of 212222120993 in words is "two hundred twelve billion, two hundred twenty-two million, one hundred twenty thousand, nine hundred ninety-three".