1201422691 has 16 divisors (see below), whose sum is σ = 1455503040. Its totient is φ = 968094720.

The previous prime is 1201422689. The next prime is 1201422707. The reversal of 1201422691 is 1962241021.

It is a cyclic number.

It is not a de Polignac number, because 1201422691 - 2¹ = 1201422689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201422791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106615 + ... + 117343.

It is an arithmetic number, because the mean of its divisors is an integer number (90968940).

Almost surely, 2^1201422691 is an apocalyptic number.

1201422691 is a deficient number, since it is larger than the sum of its proper divisors (254080349).

1201422691 is a wasteful number, since it uses less digits than its factorization.

1201422691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11694.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1201422691 is about 34661.5448443949. The cubic root of 1201422691 is about 1063.0783574356.

The spelling of 1201422691 in words is "one billion, two hundred one million, four hundred twenty-two thousand, six hundred ninety-one".