1021200110089 has 2 divisors, whose sum is σ = 1021200110090. Its totient is φ = 1021200110088.

The previous prime is 1021200110059. The next prime is 1021200110107. The reversal of 1021200110089 is 9800110021201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 984675166864 + 36524943225 = 992308^2 + 191115^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021200110089 - 2¹⁵ = 1021200077321 is a prime.

It is not a weakly prime, because it can be changed into another prime (1021200110059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510600055044 + 510600055045.

It is an arithmetic number, because the mean of its divisors is an integer number (510600055045).

Almost surely, 2^{1021200110089} is an apocalyptic number.

It is an amenable number.

1021200110089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021200110089 is an equidigital number, since it uses as much as digits as its factorization.

1021200110089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 25.

The spelling of 1021200110089 in words is "one trillion, twenty-one billion, two hundred million, one hundred ten thousand, eighty-nine".