1021331201101 has 4 divisors (see below), whose sum is σ = 1021490268604. Its totient is φ = 1021172133600.

The previous prime is 1021331201081. The next prime is 1021331201119. The reversal of 1021331201101 is 1011021331201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 212862276900 + 808468924201 = 461370^2 + 899149^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021331201101 is a prime.

It is a super-2 number, since 2×1021331201101² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021331201161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79524120 + ... + 79536961.

It is an arithmetic number, because the mean of its divisors is an integer number (255372567151).

Almost surely, 2^{1021331201101} is an apocalyptic number.

It is an amenable number.

1021331201101 is a deficient number, since it is larger than the sum of its proper divisors (159067503).

1021331201101 is an equidigital number, since it uses as much as digits as its factorization.

1021331201101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159067502.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1021331201101 its reverse (1011021331201), we get a palindrome (2032352532302).

It can be divided in two parts, 1021331201 and 101, that multiplied together give a palindrome (103154451301).

The spelling of 1021331201101 in words is "one trillion, twenty-one billion, three hundred thirty-one million, two hundred one thousand, one hundred one".