1221010012199 has 8 divisors (see below), whose sum is σ = 1226946057648. Its totient is φ = 1215075375360.

The previous prime is 1221010012147. The next prime is 1221010012213. The reversal of 1221010012199 is 9912100101221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1221010012199 - 2³² = 1216715044903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221010212199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1406999 + ... + 2102775.

It is an arithmetic number, because the mean of its divisors is an integer number (153368257206).

Almost surely, 2^{1221010012199} is an apocalyptic number.

1221010012199 is a deficient number, since it is larger than the sum of its proper divisors (5936045449).

1221010012199 is an equidigital number, since it uses as much as digits as its factorization.

1221010012199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704305.

The product of its (nonzero) digits is 648, while the sum is 29.

The spelling of 1221010012199 in words is "one trillion, two hundred twenty-one billion, ten million, twelve thousand, one hundred ninety-nine".