121212001202211 has 12 divisors (see below), whose sum is σ = 175089848587992. Its totient is φ = 80805302254656.

The previous prime is 121212001202197. The next prime is 121212001202219. The reversal of 121212001202211 is 112202100212121.

121212001202211 is a `hidden beast` number, since 1 + 2 + 121 + 200 + 120 + 221 + 1 = 666.

It is not a de Polignac number, because 121212001202211 - 2¹⁸ = 121212000940067 is a prime.

It is a super-2 number, since 2×121212001202211² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121212001202219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 224594406 + ... + 225133451.

It is an arithmetic number, because the mean of its divisors is an integer number (14590820715666).

Almost surely, 2^{121212001202211} is an apocalyptic number.

121212001202211 is a deficient number, since it is larger than the sum of its proper divisors (53877847385781).

121212001202211 is a wasteful number, since it uses less digits than its factorization.

121212001202211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449757810 (or 449757807 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121212001202211 its reverse (112202100212121), we get a palindrome (233414101414332).

The spelling of 121212001202211 in words is "one hundred twenty-one trillion, two hundred twelve billion, one million, two hundred two thousand, two hundred eleven".