1233121312222 has 4 divisors (see below), whose sum is σ = 1849681968336. Its totient is φ = 616560656110.

The previous prime is 1233121312183. The next prime is 1233121312223. The reversal of 1233121312222 is 2222131213321.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1233121312222² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233121312223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308280328054 + ... + 308280328057.

It is an arithmetic number, because the mean of its divisors is an integer number (462420492084).

Almost surely, 2^{1233121312222} is an apocalyptic number.

1233121312222 is a deficient number, since it is larger than the sum of its proper divisors (616560656114).

1233121312222 is an equidigital number, since it uses as much as digits as its factorization.

1233121312222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616560656113.

The product of its digits is 1728, while the sum is 25.

Adding to 1233121312222 its reverse (2222131213321), we get a palindrome (3455252525543).

The spelling of 1233121312222 in words is "one trillion, two hundred thirty-three billion, one hundred twenty-one million, three hundred twelve thousand, two hundred twenty-two".