121211220201219 has 20 divisors (see below), whose sum is σ = 181355567982160. Its totient is φ = 80679417532560.

The previous prime is 121211220201191. The next prime is 121211220201233. The reversal of 121211220201219 is 912102022112121.

121211220201219 is a `hidden beast` number, since 1 + 2 + 1 + 21 + 1 + 220 + 201 + 219 = 666.

It is not a de Polignac number, because 121211220201219 - 2⁷ = 121211220201091 is a prime.

It is a super-2 number, since 2×121211220201219² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121211220201192 and 121211220201201.

It is not an unprimeable number, because it can be changed into a prime (121211220201719) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1185713404 + ... + 1185815625.

It is an arithmetic number, because the mean of its divisors is an integer number (9067778399108).

Almost surely, 2^{121211220201219} is an apocalyptic number.

121211220201219 is a deficient number, since it is larger than the sum of its proper divisors (60144347780941).

121211220201219 is an equidigital number, since it uses as much as digits as its factorization.

121211220201219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2371529672 (or 2371529663 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The spelling of 121211220201219 in words is "one hundred twenty-one trillion, two hundred eleven billion, two hundred twenty million, two hundred one thousand, two hundred nineteen".