1223013101220 has 36 divisors (see below), whose sum is σ = 3709806407580. Its totient is φ = 326136826944.

The previous prime is 1223013101209. The next prime is 1223013101287. The reversal of 1223013101220 is 221013103221.

1223013101220 is a `hidden beast` number, since 1 + 2 + 230 + 1 + 310 + 122 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 187210251684 + 1035802849536 = 432678^2 + 1017744^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1223013101220² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1223013101193 and 1223013101202.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3397258435 + ... + 3397258794.

Almost surely, 2^{1223013101220} is an apocalyptic number.

1223013101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223013101220 is an abundant number, since it is smaller than the sum of its proper divisors (2486793306360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223013101220 is a wasteful number, since it uses less digits than its factorization.

1223013101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6794517244 (or 6794517239 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1223013101220 its reverse (221013103221), we get a palindrome (1444026204441).

The spelling of 1223013101220 in words is "one trillion, two hundred twenty-three billion, thirteen million, one hundred one thousand, two hundred twenty".