1222020394 has 32 divisors (see below), whose sum is σ = 2112364800. Its totient is φ = 519374592.

The previous prime is 1222020379. The next prime is 1222020407. The reversal of 1222020394 is 4930202221.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1205832 + ... + 1206844.

It is an arithmetic number, because the mean of its divisors is an integer number (66011400).

Almost surely, 2^1222020394 is an apocalyptic number.

1222020394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1222020394 is a deficient number, since it is larger than the sum of its proper divisors (890344406).

1222020394 is a wasteful number, since it uses less digits than its factorization.

1222020394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1222020394 is about 34957.4082849401. The cubic root of 1222020394 is about 1069.1192548542.

The spelling of 1222020394 in words is "one billion, two hundred twenty-two million, twenty thousand, three hundred ninety-four".