1021200110993 has 2 divisors, whose sum is σ = 1021200110994. Its totient is φ = 1021200110992.

The previous prime is 1021200110969. The next prime is 1021200111049. The reversal of 1021200110993 is 3990110021201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 871192624129 + 150007486864 = 933377^2 + 387308^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021200110993 - 2¹⁶ = 1021200045457 is a prime.

It is not a weakly prime, because it can be changed into another prime (1021200110923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510600055496 + 510600055497.

It is an arithmetic number, because the mean of its divisors is an integer number (510600055497).

Almost surely, 2^{1021200110993} is an apocalyptic number.

It is an amenable number.

1021200110993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021200110993 is an equidigital number, since it uses as much as digits as its factorization.

1021200110993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 29.

The spelling of 1021200110993 in words is "one trillion, twenty-one billion, two hundred million, one hundred ten thousand, nine hundred ninety-three".