1121020120011 has 12 divisors (see below), whose sum is σ = 1642927559336. Its totient is φ = 679406133120.

The previous prime is 1121020119889. The next prime is 1121020120079. The reversal of 1121020120011 is 1100210201211.

It is not a de Polignac number, because 1121020120011 - 2³⁵ = 1086660381643 is a prime.

It is a super-2 number, since 2×1121020120011² (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 (1121010120011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1544104486 + ... + 1544105211.

Almost surely, 2^{1121020120011} is an apocalyptic number.

1121020120011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1121020120011 is a deficient number, since it is larger than the sum of its proper divisors (521907439325).

1121020120011 is a wasteful number, since it uses less digits than its factorization.

1121020120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3088209722 (or 3088209711 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1121020120011 its reverse (1100210201211), we get a palindrome (2221230321222).

It can be divided in two parts, 11210201200 and 11, that added together give a palindrome (11210201211).

The spelling of 1121020120011 in words is "one trillion, one hundred twenty-one billion, twenty million, one hundred twenty thousand, eleven".