121121111012022 has 48 divisors (see below), whose sum is σ = 286288542858240. Its totient is φ = 36703074606000.

The previous prime is 121121111012009. The next prime is 121121111012023. The reversal of 121121111012022 is 220210111121121.

It is a happy number.

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 = 121121111011986 and 121121111012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121121111012023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23160379 + ... + 27904217.

It is an arithmetic number, because the mean of its divisors is an integer number (5964344642880).

Almost surely, 2^{121121111012022} is an apocalyptic number.

121121111012022 is an abundant number, since it is smaller than the sum of its proper divisors (165167431846218).

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

121121111012022 is a wasteful number, since it uses less digits than its factorization.

121121111012022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4872809 (or 4872806 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 121121111012022 its reverse (220210111121121), we get a palindrome (341331222133143).

The spelling of 121121111012022 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, one hundred eleven million, twelve thousand, twenty-two".