222012011993 has 2 divisors, whose sum is σ = 222012011994. Its totient is φ = 222012011992.

The previous prime is 222012011987. The next prime is 222012012049. The reversal of 222012011993 is 399110210222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125693648089 + 96318363904 = 354533^2 + 310352^2 .

It is a cyclic number.

It is not a de Polignac number, because 222012011993 - 2³² = 217717044697 is a prime.

It is not a weakly prime, because it can be changed into another prime (222012011983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111006005996 + 111006005997.

It is an arithmetic number, because the mean of its divisors is an integer number (111006005997).

Almost surely, 2^222012011993 is an apocalyptic number.

It is an amenable number.

222012011993 is a deficient number, since it is larger than the sum of its proper divisors (1).

222012011993 is an equidigital number, since it uses as much as digits as its factorization.

222012011993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 32.

The spelling of 222012011993 in words is "two hundred twenty-two billion, twelve million, eleven thousand, nine hundred ninety-three".