1220210011101 has 4 divisors (see below), whose sum is σ = 1626946681472. Its totient is φ = 813473340732.

The previous prime is 1220210011087. The next prime is 1220210011133. The reversal of 1220210011101 is 1011100120221.

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 not a de Polignac number, because 1220210011101 - 2¹⁸ = 1220209748957 is a prime.

It is a super-2 number, since 2×1220210011101² (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 (1220210061101) 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, 203368335181 + ... + 203368335186.

It is an arithmetic number, because the mean of its divisors is an integer number (406736670368).

Almost surely, 2^{1220210011101} is an apocalyptic number.

It is an amenable number.

1220210011101 is a deficient number, since it is larger than the sum of its proper divisors (406736670371).

1220210011101 is an equidigital number, since it uses as much as digits as its factorization.

1220210011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406736670370.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1220210011101 its reverse (1011100120221), we get a palindrome (2231310131322).

The spelling of 1220210011101 in words is "one trillion, two hundred twenty billion, two hundred ten million, eleven thousand, one hundred one".