1223653011 has 16 divisors (see below), whose sum is σ = 1915010304. Its totient is φ = 680331744.

The previous prime is 1223653009. The next prime is 1223653019. The reversal of 1223653011 is 1103563221.

It is not a de Polignac number, because 1223653011 - 2¹ = 1223653009 is a prime.

It is a super-2 number, since 2×1223653011² = 2994653382658732242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1223653019) 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, 786645 + ... + 788198.

It is an arithmetic number, because the mean of its divisors is an integer number (119688144).

Almost surely, 2^1223653011 is an apocalyptic number.

1223653011 is a deficient number, since it is larger than the sum of its proper divisors (691357293).

1223653011 is a wasteful number, since it uses less digits than its factorization.

1223653011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574890.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1223653011 is about 34980.7520073540. The cubic root of 1223653011 is about 1069.5951567688.

The spelling of 1223653011 in words is "one billion, two hundred twenty-three million, six hundred fifty-three thousand, eleven".