1222940149 has 4 divisors (see below), whose sum is σ = 1287305440. Its totient is φ = 1158574860.

The previous prime is 1222940143. The next prime is 1222940161. The reversal of 1222940149 is 9410492221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1222940149 - 2¹⁵ = 1222907381 is a prime.

It is a super-2 number, since 2×1222940149² = 2991165216072284402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222940143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32182617 + ... + 32182654.

It is an arithmetic number, because the mean of its divisors is an integer number (321826360).

Almost surely, 2^1222940149 is an apocalyptic number.

1222940149 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1222940149 is a deficient number, since it is larger than the sum of its proper divisors (64365291).

1222940149 is an equidigital number, since it uses as much as digits as its factorization.

1222940149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64365290.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 1222940149 is about 34970.5611765096. The cubic root of 1222940149 is about 1069.3874121853.

The spelling of 1222940149 in words is "one billion, two hundred twenty-two million, nine hundred forty thousand, one hundred forty-nine".