1100121012021 has 32 divisors (see below), whose sum is σ = 1507732402176. Its totient is φ = 713171304000.

The previous prime is 1100121011893. The next prime is 1100121012037. The reversal of 1100121012021 is 1202101210011.

It is not a de Polignac number, because 1100121012021 - 2⁷ = 1100121011893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1100121011988 and 1100121012006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100121012061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27823656 + ... + 27863166.

It is an arithmetic number, because the mean of its divisors is an integer number (47116637568).

Almost surely, 2^{1100121012021} is an apocalyptic number.

It is an amenable number.

1100121012021 is a deficient number, since it is larger than the sum of its proper divisors (407611390155).

1100121012021 is a wasteful number, since it uses less digits than its factorization.

1100121012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40833.

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

Adding to 1100121012021 its reverse (1202101210011), we get a palindrome (2302222222032).

The spelling of 1100121012021 in words is "one trillion, one hundred billion, one hundred twenty-one million, twelve thousand, twenty-one".