1223401501 has 16 divisors (see below), whose sum is σ = 1433819520. Its totient is φ = 1021950720.

The previous prime is 1223401489. The next prime is 1223401519. The reversal of 1223401501 is 1051043221.

It is not a de Polignac number, because 1223401501 - 2¹⁵ = 1223368733 is a prime.

It is a super-2 number, since 2×1223401501² = 2993422465298106002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223401561) 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, 368290 + ... + 371596.

It is an arithmetic number, because the mean of its divisors is an integer number (89613720).

Almost surely, 2^1223401501 is an apocalyptic number.

It is an amenable number.

1223401501 is a deficient number, since it is larger than the sum of its proper divisors (210418019).

1223401501 is a wasteful number, since it uses less digits than its factorization.

1223401501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4644.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1223401501 is about 34977.1568455757. The cubic root of 1223401501 is about 1069.5218701130.

Adding to 1223401501 its reverse (1051043221), we get a palindrome (2274444722).

The spelling of 1223401501 in words is "one billion, two hundred twenty-three million, four hundred one thousand, five hundred one".