122111022222210 has 256 divisors, whose sum is σ = 346111379767296. Its totient is φ = 26992499159808.

The previous prime is 122111022222197. The next prime is 122111022222223. The reversal of 122111022222210 is 12222220111221.

It is an interprime number because it is at equal distance from previous prime (122111022222197) and next prime (122111022222223).

It is a super-2 number, since 2×122111022222210² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8634018399 + ... + 8634032541.

It is an arithmetic number, because the mean of its divisors is an integer number (1351997577216).

Almost surely, 2^{122111022222210} is an apocalyptic number.

122111022222210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 122111022222210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173055689883648).

122111022222210 is an abundant number, since it is smaller than the sum of its proper divisors (224000357545086).

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

122111022222210 is a wasteful number, since it uses less digits than its factorization.

122111022222210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23589.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 122111022222210 its reverse (12222220111221), we get a palindrome (134333242333431).

The spelling of 122111022222210 in words is "one hundred twenty-two trillion, one hundred eleven billion, twenty-two million, two hundred twenty-two thousand, two hundred ten".