1211101000120 has 32 divisors (see below), whose sum is σ = 2972702455920. Its totient is φ = 440400363520.

The previous prime is 1211101000093. The next prime is 1211101000133. The reversal of 1211101000120 is 210001011121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1211101000097 and 1211101000106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1376250697 + ... + 1376251576.

Almost surely, 2^{1211101000120} is an apocalyptic number.

1211101000120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211101000120 is an abundant number, since it is smaller than the sum of its proper divisors (1761601455800).

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

1211101000120 is a wasteful number, since it uses less digits than its factorization.

1211101000120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2752502295 (or 2752502291 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1211101000120 its reverse (210001011121), we get a palindrome (1421102011241).

The spelling of 1211101000120 in words is "one trillion, two hundred eleven billion, one hundred one million, one hundred twenty", and thus it is an aban number.