121001021211222 has 24 divisors (see below), whose sum is σ = 262256298174000. Its totient is φ = 40320224678160.

The previous prime is 121001021211193. The next prime is 121001021211223. The reversal of 121001021211222 is 222112120100121.

121001021211222 is a `hidden beast` number, since 1 + 210 + 0 + 1 + 0 + 21 + 211 + 222 = 666.

121001021211222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121001021211195 and 121001021211204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121001021211223) 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 11 ways as a sum of consecutive naturals, for example, 1120699429 + ... + 1120807392.

It is an arithmetic number, because the mean of its divisors is an integer number (10927345757250).

Almost surely, 2^{121001021211222} is an apocalyptic number.

121001021211222 is an abundant number, since it is smaller than the sum of its proper divisors (141255276962778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121001021211222 is a wasteful number, since it uses less digits than its factorization.

121001021211222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2241509828 (or 2241509825 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121001021211222 its reverse (222112120100121), we get a palindrome (343113141311343).

The spelling of 121001021211222 in words is "one hundred twenty-one trillion, one billion, twenty-one million, two hundred eleven thousand, two hundred twenty-two".