121221022001022 has 12 divisors (see below), whose sum is σ = 262645547668920. Its totient is φ = 40407007333668.

The previous prime is 121221022001021. The next prime is 121221022001063. The reversal of 121221022001022 is 220100220122121.

It is a happy number.

121221022001022 is a `hidden beast` number, since 1 + 212 + 210 + 220 + 0 + 1 + 0 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 6734501222279 = 121221022001022 / (1 + 2 + 1 + 2 + 2 + 1 + 0 + 2 + 2 + 0 + 0 + 1 + 0 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 121221022000986 and 121221022001004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121221022001021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3367250611122 + ... + 3367250611157.

It is an arithmetic number, because the mean of its divisors is an integer number (21887128972410).

Almost surely, 2^{121221022001022} is an apocalyptic number.

121221022001022 is an abundant number, since it is smaller than the sum of its proper divisors (141424525667898).

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

121221022001022 is a wasteful number, since it uses less digits than its factorization.

121221022001022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6734501222287 (or 6734501222284 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121221022001022 its reverse (220100220122121), we get a palindrome (341321242123143).

The spelling of 121221022001022 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, twenty-two million, one thousand, twenty-two".