121122011122210 has 128 divisors (see below), whose sum is σ = 259301865185280. Its totient is φ = 39871894443264.

The previous prime is 121122011122207. The next prime is 121122011122213. The reversal of 121122011122210 is 12221110221121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121122011122207) and next prime (121122011122213).

It is not an unprimeable number, because it can be changed into a prime (121122011122213) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1467979777 + ... + 1468062283.

It is an arithmetic number, because the mean of its divisors is an integer number (2025795821760).

Almost surely, 2^{121122011122210} is an apocalyptic number.

121122011122210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121122011122210 is an abundant number, since it is smaller than the sum of its proper divisors (138179854063070).

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

121122011122210 is a wasteful number, since it uses less digits than its factorization.

121122011122210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91040.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121122011122210 its reverse (12221110221121), we get a palindrome (133343121343331).

The spelling of 121122011122210 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, eleven million, one hundred twenty-two thousand, two hundred ten".