1212222012011 has 4 divisors (see below), whose sum is σ = 1212335964000. Its totient is φ = 1212108060024.

The previous prime is 1212222011993. The next prime is 1212222012037. The reversal of 1212222012011 is 1102102222121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1212222012011 - 2¹⁸ = 1212221749867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212222012611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56960036 + ... + 56981313.

It is an arithmetic number, because the mean of its divisors is an integer number (303083991000).

Almost surely, 2^{1212222012011} is an apocalyptic number.

1212222012011 is a deficient number, since it is larger than the sum of its proper divisors (113951989).

1212222012011 is a wasteful number, since it uses less digits than its factorization.

1212222012011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113951988.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1212222012011 its reverse (1102102222121), we get a palindrome (2314324234132).

The spelling of 1212222012011 in words is "one trillion, two hundred twelve billion, two hundred twenty-two million, twelve thousand, eleven".