121222100019 has 4 divisors (see below), whose sum is σ = 161629466696. Its totient is φ = 80814733344.

The previous prime is 121222099997. The next prime is 121222100029. The reversal of 121222100019 is 910001222121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 121222100019 - 2⁸ = 121222099763 is a prime.

It is a super-2 number, since 2×121222100019² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121222099968 and 121222100004.

It is not an unprimeable number, because it can be changed into a prime (121222100029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20203683334 + ... + 20203683339.

It is an arithmetic number, because the mean of its divisors is an integer number (40407366674).

Almost surely, 2^121222100019 is an apocalyptic number.

121222100019 is a deficient number, since it is larger than the sum of its proper divisors (40407366677).

121222100019 is an equidigital number, since it uses as much as digits as its factorization.

121222100019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40407366676.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 121222100019 in words is "one hundred twenty-one billion, two hundred twenty-two million, one hundred thousand, nineteen".