1211020003011 has 48 divisors (see below), whose sum is σ = 2023141795584. Its totient is φ = 638672682816.

The previous prime is 1211020002989. The next prime is 1211020003051. The reversal of 1211020003011 is 1103000201121.

It is not a de Polignac number, because 1211020003011 - 2¹⁷ = 1211019871939 is a prime.

It is a super-2 number, since 2×1211020003011² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1211020003051) 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, 12071520 + ... + 12171426.

It is an arithmetic number, because the mean of its divisors is an integer number (42148787408).

Almost surely, 2^{1211020003011} is an apocalyptic number.

1211020003011 is a deficient number, since it is larger than the sum of its proper divisors (812121792573).

1211020003011 is a wasteful number, since it uses less digits than its factorization.

1211020003011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106280 (or 106273 counting only the distinct ones).

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

Adding to 1211020003011 its reverse (1103000201121), we get a palindrome (2314020204132).

The spelling of 1211020003011 in words is "one trillion, two hundred eleven billion, twenty million, three thousand, eleven".