1101021202021 has 16 divisors (see below), whose sum is σ = 1203134478336. Its totient is φ = 1001460355776.

The previous prime is 1101021202007. The next prime is 1101021202031. The reversal of 1101021202021 is 1202021201011.

It is a cyclic number.

It is not a de Polignac number, because 1101021202021 - 2¹⁷ = 1101021070949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1101021201992 and 1101021202010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101021202031) 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, 918870 + ... + 1745383.

It is an arithmetic number, because the mean of its divisors is an integer number (75195904896).

Almost surely, 2^{1101021202021} is an apocalyptic number.

It is an amenable number.

1101021202021 is a deficient number, since it is larger than the sum of its proper divisors (102113276315).

1101021202021 is a wasteful number, since it uses less digits than its factorization.

1101021202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2664732.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1101021202021 its reverse (1202021201011), we get a palindrome (2303042403032).

The spelling of 1101021202021 in words is "one trillion, one hundred one billion, twenty-one million, two hundred two thousand, twenty-one".