1220101110101 has 16 divisors (see below), whose sum is σ = 1274059704960. Its totient is φ = 1167477108480.

The previous prime is 1220101110077. The next prime is 1220101110113. The reversal of 1220101110101 is 1010111010221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220101110101 is a prime.

It is a super-3 number, since 3×1220101110101³ (a number of 37 digits) contains 333 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 (1220101190101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 602945 + ... + 1674438.

It is an arithmetic number, because the mean of its divisors is an integer number (79628731560).

Almost surely, 2^{1220101110101} is an apocalyptic number.

It is an amenable number.

1220101110101 is a deficient number, since it is larger than the sum of its proper divisors (53958594859).

1220101110101 is a wasteful number, since it uses less digits than its factorization.

1220101110101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2277676.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1220101110101 its reverse (1010111010221), we get a palindrome (2230212120322).

The spelling of 1220101110101 in words is "one trillion, two hundred twenty billion, one hundred one million, one hundred ten thousand, one hundred one".