1101121211021 has 16 divisors (see below), whose sum is σ = 1204240722048. Its totient is φ = 1000673688000.

The previous prime is 1101121210951. The next prime is 1101121211033. The reversal of 1101121211021 is 1201121211011.

It is a cyclic number.

It is not a de Polignac number, because 1101121211021 - 2¹⁴ = 1101121194637 is a prime.

It is a super-2 number, since 2×1101121211021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1101121210987 and 1101121211005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101121211081) 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, 203891 + ... + 1497936.

It is an arithmetic number, because the mean of its divisors is an integer number (75265045128).

Almost surely, 2^{1101121211021} is an apocalyptic number.

It is an amenable number.

1101121211021 is a deficient number, since it is larger than the sum of its proper divisors (103119511027).

1101121211021 is a wasteful number, since it uses less digits than its factorization.

1101121211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1702612.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1101121211021 its reverse (1201121211011), we get a palindrome (2302242422032).

The spelling of 1101121211021 in words is "one trillion, one hundred one billion, one hundred twenty-one million, two hundred eleven thousand, twenty-one".