1221000100119 has 24 divisors (see below), whose sum is σ = 1769154987600. Its totient is φ = 811468142208.

The previous prime is 1221000100091. The next prime is 1221000100121. The reversal of 1221000100119 is 9110010001221.

It is a happy number.

It is not a de Polignac number, because 1221000100119 - 2²⁴ = 1220983322903 is a prime.

It is a super-2 number, since 2×1221000100119² (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 (1221000100189) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14313907 + ... + 14398955.

It is an arithmetic number, because the mean of its divisors is an integer number (73714791150).

Almost surely, 2^{1221000100119} is an apocalyptic number.

1221000100119 is a deficient number, since it is larger than the sum of its proper divisors (548154887481).

1221000100119 is a wasteful number, since it uses less digits than its factorization.

1221000100119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89999 (or 89996 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

The spelling of 1221000100119 in words is "one trillion, two hundred twenty-one billion, one hundred thousand, one hundred nineteen".