1220020000101 has 36 divisors (see below), whose sum is σ = 2056557338784. Its totient is φ = 694912554000.

The previous prime is 1220020000091. The next prime is 1220020000163. The reversal of 1220020000101 is 1010000200221.

It is not a de Polignac number, because 1220020000101 - 2¹⁴ = 1220019983717 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 (1220020000501) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4310575 + ... + 4584876.

It is an arithmetic number, because the mean of its divisors is an integer number (57126592744).

Almost surely, 2^{1220020000101} is an apocalyptic number.

It is an amenable number.

1220020000101 is a deficient number, since it is larger than the sum of its proper divisors (836537338683).

1220020000101 is a wasteful number, since it uses less digits than its factorization.

1220020000101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8895782 (or 8895772 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1220020000101 its reverse (1010000200221), we get a palindrome (2230020200322).

It can be divided in two parts, 12200 and 20000101, that added together give a triangular number (20012301 = T₆₃₂₆).

The spelling of 1220020000101 in words is "one trillion, two hundred twenty billion, twenty million, one hundred one", and thus it is an aban number.