1212210220011 has 16 divisors (see below), whose sum is σ = 1864124064000. Its totient is φ = 686336584608.

The previous prime is 1212210219953. The next prime is 1212210220019. The reversal of 1212210220011 is 1100220122121.

It is not a de Polignac number, because 1212210220011 - 2¹⁸ = 1212209957867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212210220019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264788061 + ... + 264792638.

It is an arithmetic number, because the mean of its divisors is an integer number (116507754000).

Almost surely, 2^{1212210220011} is an apocalyptic number.

1212210220011 is a deficient number, since it is larger than the sum of its proper divisors (651913843989).

1212210220011 is a wasteful number, since it uses less digits than its factorization.

1212210220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529580818.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1212210220011 its reverse (1100220122121), we get a palindrome (2312430342132).

The spelling of 1212210220011 in words is "one trillion, two hundred twelve billion, two hundred ten million, two hundred twenty thousand, eleven".