1201302111 has 16 divisors (see below), whose sum is σ = 1656058880. Its totient is φ = 773789760.

The previous prime is 1201302103. The next prime is 1201302131. The reversal of 1201302111 is 1112031021.

It is not a de Polignac number, because 1201302111 - 2³ = 1201302103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201302101) 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, 49755 + ... + 69843.

It is an arithmetic number, because the mean of its divisors is an integer number (103503680).

Almost surely, 2^1201302111 is an apocalyptic number.

1201302111 is a deficient number, since it is larger than the sum of its proper divisors (454756769).

1201302111 is a wasteful number, since it uses less digits than its factorization.

1201302111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20766.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1201302111 is about 34659.8054091479. The cubic root of 1201302111 is about 1063.0427911918.

Adding to 1201302111 its reverse (1112031021), we get a palindrome (2313333132).

The spelling of 1201302111 in words is "one billion, two hundred one million, three hundred two thousand, one hundred eleven".