1000120100211 has 28 divisors (see below), whose sum is σ = 1501770326760. Its totient is φ = 665734658400.

The previous prime is 1000120100141. The next prime is 1000120100249. The reversal of 1000120100211 is 1120010210001.

It is a happy number.

It is not a de Polignac number, because 1000120100211 - 2¹¹ = 1000120098163 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 1000120100193 and 1000120100202.

It is not an unprimeable number, because it can be changed into a prime (1000120100281) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 560490 + ... + 1521311.

Almost surely, 2^{1000120100211} is an apocalyptic number.

1000120100211 is a deficient number, since it is larger than the sum of its proper divisors (501650226549).

1000120100211 is an frugal number, since it uses more digits than its factorization.

1000120100211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2082478 (or 2082463 counting only the distinct ones).

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

Adding to 1000120100211 its reverse (1120010210001), we get a palindrome (2120130310212).

The spelling of 1000120100211 in words is "one trillion, one hundred twenty million, one hundred thousand, two hundred eleven".