1122121011 has 16 divisors (see below), whose sum is σ = 1634480640. Its totient is φ = 679113120.

The previous prime is 1122120997. The next prime is 1122121031. The reversal of 1122121011 is 1101212211.

It is not a de Polignac number, because 1122121011 - 2⁹ = 1122120499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1122121031) 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, 81 + ... + 47373.

It is an arithmetic number, because the mean of its divisors is an integer number (102155040).

Almost surely, 2^1122121011 is an apocalyptic number.

1122121011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1122121011 is a deficient number, since it is larger than the sum of its proper divisors (512359629).

1122121011 is a wasteful number, since it uses less digits than its factorization.

1122121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48026.

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

The square root of 1122121011 is about 33498.0747357218. The cubic root of 1122121011 is about 1039.1539627635.

Adding to 1122121011 its reverse (1101212211), we get a palindrome (2223333222).

The spelling of 1122121011 in words is "one billion, one hundred twenty-two million, one hundred twenty-one thousand, eleven".