121922219221 has 8 divisors (see below), whose sum is σ = 136099221984. Its totient is φ = 108260743920.

The previous prime is 121922219197. The next prime is 121922219227. The reversal of 121922219221 is 122912229121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 121922219221 - 2⁷ = 121922219093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121922219227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128881366 + ... + 128882311.

It is an arithmetic number, because the mean of its divisors is an integer number (17012402748).

Almost surely, 2^121922219221 is an apocalyptic number.

121922219221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121922219221 is a deficient number, since it is larger than the sum of its proper divisors (14177002763).

121922219221 is a wasteful number, since it uses less digits than its factorization.

121922219221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257763731.

The product of its digits is 5184, while the sum is 34.

It can be divided in two parts, 121922 and 219221, that added together give a palindrome (341143).

The spelling of 121922219221 in words is "one hundred twenty-one billion, nine hundred twenty-two million, two hundred nineteen thousand, two hundred twenty-one".