2011121011012 has 6 divisors (see below), whose sum is σ = 3519461769278. Its totient is φ = 1005560505504.

The previous prime is 2011121011001. The next prime is 2011121011019. The reversal of 2011121011012 is 2101101211102.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1765406486596 + 245714524416 = 1328686^2 + 495696^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2011121010983 and 2011121011001.

It is not an unprimeable number, because it can be changed into a prime (2011121011019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251390126373 + ... + 251390126380.

Almost surely, 2^{2011121011012} is an apocalyptic number.

It is an amenable number.

2011121011012 is a deficient number, since it is larger than the sum of its proper divisors (1508340758266).

2011121011012 is a wasteful number, since it uses less digits than its factorization.

2011121011012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502780252757 (or 502780252755 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2011121011012 its reverse (2101101211102), we get a palindrome (4112222222114).

The spelling of 2011121011012 in words is "two trillion, eleven billion, one hundred twenty-one million, eleven thousand, twelve".