121222220231422 has 4 divisors (see below), whose sum is σ = 181833330347136. Its totient is φ = 60611110115710.

The previous prime is 121222220231419. The next prime is 121222220231447. The reversal of 121222220231422 is 224132022222121.

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

It is a super-2 number, since 2×121222220231422² (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 as a sum of consecutive naturals, namely, 30305555057854 + ... + 30305555057857.

It is an arithmetic number, because the mean of its divisors is an integer number (45458332586784).

Almost surely, 2^{121222220231422} is an apocalyptic number.

121222220231422 is a deficient number, since it is larger than the sum of its proper divisors (60611110115714).

121222220231422 is an equidigital number, since it uses as much as digits as its factorization.

121222220231422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60611110115713.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 121222220231422 its reverse (224132022222121), we get a palindrome (345354242453543).

The spelling of 121222220231422 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, two hundred twenty million, two hundred thirty-one thousand, four hundred twenty-two".