121843722 has 64 divisors (see below), whose sum is σ = 327204864. Its totient is φ = 29211840.

The previous prime is 121843699. The next prime is 121843723. The reversal of 121843722 is 227348121.

It is a self number, because there is not a number n which added to its sum of digits gives 121843722.

It is not an unprimeable number, because it can be changed into a prime (121843723) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4138 + ... + 16149.

It is an arithmetic number, because the mean of its divisors is an integer number (5112576).

Almost surely, 2^121843722 is an apocalyptic number.

121843722 is an abundant number, since it is smaller than the sum of its proper divisors (205361142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121843722 is a wasteful number, since it uses less digits than its factorization.

121843722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20323.

The product of its digits is 5376, while the sum is 30.

The square root of 121843722 is about 11038.2843775652. The cubic root of 121843722 is about 495.7557031647.

The spelling of 121843722 in words is "one hundred twenty-one million, eight hundred forty-three thousand, seven hundred twenty-two".