1201023023011 has 48 divisors (see below), whose sum is σ = 1468991076960. Its totient is φ = 977829511680.

The previous prime is 1201023022993. The next prime is 1201023023047. The reversal of 1201023023011 is 1103203201021.

It is not a de Polignac number, because 1201023023011 - 2²³ = 1201014634403 is a prime.

It is a super-2 number, since 2×1201023023011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201023023071) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 270437551 + ... + 270441991.

It is an arithmetic number, because the mean of its divisors is an integer number (30603980770).

Almost surely, 2^{1201023023011} is an apocalyptic number.

1201023023011 is a deficient number, since it is larger than the sum of its proper divisors (267968053949).

1201023023011 is a wasteful number, since it uses less digits than its factorization.

1201023023011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8004 (or 7997 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1201023023011 its reverse (1103203201021), we get a palindrome (2304226224032).

The spelling of 1201023023011 in words is "one trillion, two hundred one billion, twenty-three million, twenty-three thousand, eleven".