1101021221213 has 16 divisors (see below), whose sum is σ = 1228732182720. Its totient is φ = 980445286656.

The previous prime is 1101021221191. The next prime is 1101021221219. The reversal of 1101021221213 is 3121221201011.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1101021221213 - 2²² = 1101017026909 is a prime.

It is a super-2 number, since 2×1101021221213² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 1101021221191 and 1101021221200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101021221219) 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 15 ways as a sum of consecutive naturals, for example, 1955195 + ... + 2454552.

It is an arithmetic number, because the mean of its divisors is an integer number (76795761420).

Almost surely, 2^{1101021221213} is an apocalyptic number.

It is an amenable number.

1101021221213 is a deficient number, since it is larger than the sum of its proper divisors (127710961507).

1101021221213 is a wasteful number, since it uses less digits than its factorization.

1101021221213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4410556.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1101021221213 its reverse (3121221201011), we get a palindrome (4222242422224).

The spelling of 1101021221213 in words is "one trillion, one hundred one billion, twenty-one million, two hundred twenty-one thousand, two hundred thirteen".