121987222 has 8 divisors (see below), whose sum is σ = 209120976. Its totient is φ = 52280232.

The previous prime is 121987219. The next prime is 121987249. The reversal of 121987222 is 222789121.

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

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, 4356673 + ... + 4356700.

It is an arithmetic number, because the mean of its divisors is an integer number (26140122).

Almost surely, 2^121987222 is an apocalyptic number.

121987222 is a deficient number, since it is larger than the sum of its proper divisors (87133754).

121987222 is an equidigital number, since it uses as much as digits as its factorization.

121987222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8713382.

The product of its digits is 8064, while the sum is 34.

The square root of 121987222 is about 11044.7825691591. The cubic root of 121987222 is about 495.9502502781.

The spelling of 121987222 in words is "one hundred twenty-one million, nine hundred eighty-seven thousand, two hundred twenty-two".