1212021110011 has 8 divisors (see below), whose sum is σ = 1215076805120. Its totient is φ = 1208968481448.

The previous prime is 1212021109997. The next prime is 1212021110051. The reversal of 1212021110011 is 1100111202121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1212021110011 - 2⁹ = 1212021109499 is a prime.

It is a super-2 number, since 2×1212021110011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212021109973 and 1212021110000.

It is not an unprimeable number, because it can be changed into a prime (1212021110051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25870 + ... + 1557148.

It is an arithmetic number, because the mean of its divisors is an integer number (151884600640).

Almost surely, 2^{1212021110011} is an apocalyptic number.

1212021110011 is a deficient number, since it is larger than the sum of its proper divisors (3055695109).

1212021110011 is a wasteful number, since it uses less digits than its factorization.

1212021110011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533273.

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

Adding to 1212021110011 its reverse (1100111202121), we get a palindrome (2312132312132).

The spelling of 1212021110011 in words is "one trillion, two hundred twelve billion, twenty-one million, one hundred ten thousand, eleven".