122111212011220 has 12 divisors (see below), whose sum is σ = 256433545223604. Its totient is φ = 48844484804480.

The previous prime is 122111212011197. The next prime is 122111212011263. The reversal of 122111212011220 is 22110212111221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 75177258112324 + 46933953898896 = 8670482^2 + 6850836^2 .

It is a super-2 number, since 2×122111212011220² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3052780300261 + ... + 3052780300300.

It is an arithmetic number, because the mean of its divisors is an integer number (21369462101967).

Almost surely, 2^{122111212011220} is an apocalyptic number.

122111212011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122111212011220 is an abundant number, since it is smaller than the sum of its proper divisors (134322333212384).

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

122111212011220 is a wasteful number, since it uses less digits than its factorization.

122111212011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6105560600570 (or 6105560600568 counting only the distinct ones).

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

Adding to 122111212011220 its reverse (22110212111221), we get a palindrome (144221424122441).

The spelling of 122111212011220 in words is "one hundred twenty-two trillion, one hundred eleven billion, two hundred twelve million, eleven thousand, two hundred twenty".