1220110000101 has 14 divisors (see below), whose sum is σ = 1829328163110. Its totient is φ = 813406666248.

The previous prime is 1220110000061. The next prime is 1220110000127. The reversal of 1220110000101 is 1010000110221.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 882188684001 + 337921316100 = 939249^2 + 581310^2 .

It is not a de Polignac number, because 1220110000101 - 2²⁶ = 1220042891237 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220110002101) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 836837406 + ... + 836838863.

It is an arithmetic number, because the mean of its divisors is an integer number (130666297365).

Almost surely, 2^{1220110000101} is an apocalyptic number.

It is an amenable number.

1220110000101 is a deficient number, since it is larger than the sum of its proper divisors (609218163009).

1220110000101 is an frugal number, since it uses more digits than its factorization.

1220110000101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1673676287 (or 1673676272 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1220110000101 its reverse (1010000110221), we get a palindrome (2230110110322).

The spelling of 1220110000101 in words is "one trillion, two hundred twenty billion, one hundred ten million, one hundred one", and thus it is an aban number.