1221010100083 has 2 divisors, whose sum is σ = 1221010100084. Its totient is φ = 1221010100082.

The previous prime is 1221010100059. The next prime is 1221010100143. The reversal of 1221010100083 is 3800010101221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1221010100083 - 2³³ = 1212420165491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1221010100083.

It is not a weakly prime, because it can be changed into another prime (1221010100033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610505050041 + 610505050042.

It is an arithmetic number, because the mean of its divisors is an integer number (610505050042).

Almost surely, 2^{1221010100083} is an apocalyptic number.

1221010100083 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221010100083 is an equidigital number, since it uses as much as digits as its factorization.

1221010100083 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

The spelling of 1221010100083 in words is "one trillion, two hundred twenty-one billion, ten million, one hundred thousand, eighty-three".