121531222214 has 4 divisors (see below), whose sum is σ = 182296833324. Its totient is φ = 60765611106.

The previous prime is 121531222207. The next prime is 121531222231. The reversal of 121531222214 is 412222135121.

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

It is a super-4 number, since 4×121531222214⁴ (a number of 45 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30382805552 + ... + 30382805555.

It is an arithmetic number, because the mean of its divisors is an integer number (45574208331).

Almost surely, 2^121531222214 is an apocalyptic number.

121531222214 is a deficient number, since it is larger than the sum of its proper divisors (60765611110).

121531222214 is an equidigital number, since it uses as much as digits as its factorization.

121531222214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60765611109.

The product of its digits is 1920, while the sum is 26.

Adding to 121531222214 its reverse (412222135121), we get a palindrome (533753357335).

The spelling of 121531222214 in words is "one hundred twenty-one billion, five hundred thirty-one million, two hundred twenty-two thousand, two hundred fourteen".