1220100033101 has 4 divisors (see below), whose sum is σ = 1225205054400. Its totient is φ = 1214995011804.

The previous prime is 1220100033083. The next prime is 1220100033137. The reversal of 1220100033101 is 1013300010221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1220100033101 - 2²⁶ = 1220032924237 is a prime.

It is a super-2 number, since 2×1220100033101² (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 (1220100032101) 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, 2552510291 + ... + 2552510768.

It is an arithmetic number, because the mean of its divisors is an integer number (306301263600).

Almost surely, 2^{1220100033101} is an apocalyptic number.

It is an amenable number.

1220100033101 is a deficient number, since it is larger than the sum of its proper divisors (5105021299).

1220100033101 is an equidigital number, since it uses as much as digits as its factorization.

1220100033101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5105021298.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 1220100033101 its reverse (1013300010221), we get a palindrome (2233400043322).

The spelling of 1220100033101 in words is "one trillion, two hundred twenty billion, one hundred million, thirty-three thousand, one hundred one".