121222040310 has 72 divisors (see below), whose sum is σ = 366634837296. Its totient is φ = 27707893920.

The previous prime is 121222040297. The next prime is 121222040311. The reversal of 121222040310 is 13040222121.

It is a happy number.

It is a super-2 number, since 2×121222040310² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121222040311) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13739586 + ... + 13748405.

It is an arithmetic number, because the mean of its divisors is an integer number (5092150518).

Almost surely, 2^121222040310 is an apocalyptic number.

121222040310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121222040310 is an abundant number, since it is smaller than the sum of its proper divisors (245412796986).

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

121222040310 is a wasteful number, since it uses less digits than its factorization.

121222040310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27488018 (or 27488008 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 121222040310 its reverse (13040222121), we get a palindrome (134262262431).

The spelling of 121222040310 in words is "one hundred twenty-one billion, two hundred twenty-two million, forty thousand, three hundred ten".