121220431221430 has 8 divisors (see below), whose sum is σ = 218196776198592. Its totient is φ = 48488172488568.

The previous prime is 121220431221391. The next prime is 121220431221443. The reversal of 121220431221430 is 34122134022121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×121220431221430² (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, 6061021561062 + ... + 6061021561081.

It is an arithmetic number, because the mean of its divisors is an integer number (27274597024824).

Almost surely, 2^{121220431221430} is an apocalyptic number.

121220431221430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121220431221430 is a deficient number, since it is larger than the sum of its proper divisors (96976344977162).

121220431221430 is a wasteful number, since it uses less digits than its factorization.

121220431221430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12122043122150.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 121220431221430 its reverse (34122134022121), we get a palindrome (155342565243551).

The spelling of 121220431221430 in words is "one hundred twenty-one trillion, two hundred twenty billion, four hundred thirty-one million, two hundred twenty-one thousand, four hundred thirty".