1220213313101 has 4 divisors (see below), whose sum is σ = 1221633818400. Its totient is φ = 1218792807804.

The previous prime is 1220213313091. The next prime is 1220213313113. The reversal of 1220213313101 is 1013133120221.

It is a happy number.

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 1220213313101 - 2¹⁴ = 1220213296717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220213313301) 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, 710251361 + ... + 710253078.

It is an arithmetic number, because the mean of its divisors is an integer number (305408454600).

Almost surely, 2^{1220213313101} is an apocalyptic number.

It is an amenable number.

1220213313101 is a deficient number, since it is larger than the sum of its proper divisors (1420505299).

1220213313101 is an equidigital number, since it uses as much as digits as its factorization.

1220213313101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420505298.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1220213313101 its reverse (1013133120221), we get a palindrome (2233346433322).

The spelling of 1220213313101 in words is "one trillion, two hundred twenty billion, two hundred thirteen million, three hundred thirteen thousand, one hundred one".