121210022 has 16 divisors (see below), whose sum is σ = 186877152.
Its totient is φ = 58927680.
The previous prime is 121210021. The next prime is 121210027. The reversal of 121210022 is 220012121.
Adding to 121210022 its reverse (220012121), we get a palindrome (341222143).
It is a happy number.
It is a junction number, because it is equal to n+sod(n) for n = 121209985 and 121210012.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (121210021) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23663 + ... + 28325.
It is an arithmetic number, because the mean of its divisors is an integer number (11679822).
Almost surely, 2121210022 is an apocalyptic number.
121210022 is a deficient number, since it is larger than the sum of its proper divisors (65667130).
121210022 is a wasteful number, since it uses less digits than its factorization.
121210022 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5023.
The product of its (nonzero) digits is 16, while the sum is 11.
The square root of 121210022 is about 11009.5423156460.
The cubic root of 121210022 is about 494.8947461821.
The spelling of 121210022 in words is "one hundred twenty-one million, two hundred ten thousand, twenty-two".