1221210101199 has 8 divisors (see below), whose sum is σ = 1776305601792. Its totient is φ = 740127334040.

The previous prime is 1221210101191. The next prime is 1221210101201. The reversal of 1221210101199 is 9911010121221.

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 1221210101199 - 2³ = 1221210101191 is a prime.

It is a super-2 number, since 2×1221210101199² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221210101191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18503183319 + ... + 18503183384.

It is an arithmetic number, because the mean of its divisors is an integer number (222038200224).

Almost surely, 2^{1221210101199} is an apocalyptic number.

1221210101199 is a deficient number, since it is larger than the sum of its proper divisors (555095500593).

1221210101199 is a wasteful number, since it uses less digits than its factorization.

1221210101199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37006366717.

The product of its (nonzero) digits is 648, while the sum is 30.

The spelling of 1221210101199 in words is "one trillion, two hundred twenty-one billion, two hundred ten million, one hundred one thousand, one hundred ninety-nine".