1201012312011 has 8 divisors (see below), whose sum is σ = 1601355600960. Its totient is φ = 800671948872.

The previous prime is 1201012312001. The next prime is 1201012312063. The reversal of 1201012312011 is 1102132101021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1201012312011 is a prime.

It is a super-2 number, since 2×1201012312011² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1201012312001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 544156 + ... + 1642598.

It is an arithmetic number, because the mean of its divisors is an integer number (200169450120).

Almost surely, 2^{1201012312011} is an apocalyptic number.

1201012312011 is a deficient number, since it is larger than the sum of its proper divisors (400343288949).

1201012312011 is a wasteful number, since it uses less digits than its factorization.

1201012312011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462905.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 1201012312011 its reverse (1102132101021), we get a palindrome (2303144413032).

The spelling of 1201012312011 in words is "one trillion, two hundred one billion, twelve million, three hundred twelve thousand, eleven".