122121221021019 has 12 divisors (see below), whose sum is σ = 192433439184792. Its totient is φ = 74012861224800.

The previous prime is 122121221020979. The next prime is 122121221021119. The reversal of 122121221021019 is 910120122121221.

122121221021019 is a `hidden beast` number, since 1 + 2 + 21 + 212 + 210 + 210 + 1 + 9 = 666.

It is not a de Polignac number, because 122121221021019 - 2⁸ = 122121221020763 is a prime.

It is a super-2 number, since 2×122121221021019² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122121221020983 and 122121221021001.

It is not an unprimeable number, because it can be changed into a prime (122121221021119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 616773843442 + ... + 616773843639.

It is an arithmetic number, because the mean of its divisors is an integer number (16036119932066).

Almost surely, 2^{122121221021019} is an apocalyptic number.

122121221021019 is a deficient number, since it is larger than the sum of its proper divisors (70312218163773).

122121221021019 is a wasteful number, since it uses less digits than its factorization.

122121221021019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233547687098 (or 1233547687095 counting only the distinct ones).

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

The spelling of 122121221021019 in words is "one hundred twenty-two trillion, one hundred twenty-one billion, two hundred twenty-one million, twenty-one thousand, nineteen".