1101121332021 has 24 divisors (see below), whose sum is σ = 1606754841120. Its totient is φ = 726596503200.

The previous prime is 1101121331953. The next prime is 1101121332079. The reversal of 1101121332021 is 1202331211011.

1101121332021 is a `hidden beast` number, since 110 + 1 + 1 + 213 + 320 + 21 = 666.

It is not a de Polignac number, because 1101121332021 - 2³¹ = 1098973848373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1101121331985 and 1101121332003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101121332221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 374566 + ... + 1530536.

It is an arithmetic number, because the mean of its divisors is an integer number (66948118380).

Almost surely, 2^{1101121332021} is an apocalyptic number.

It is an amenable number.

1101121332021 is a deficient number, since it is larger than the sum of its proper divisors (505633509099).

1101121332021 is a wasteful number, since it uses less digits than its factorization.

1101121332021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157057 (or 1157054 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1101121332021 its reverse (1202331211011), we get a palindrome (2303452543032).

The spelling of 1101121332021 in words is "one trillion, one hundred one billion, one hundred twenty-one million, three hundred thirty-two thousand, twenty-one".