12212122011 has 8 divisors (see below), whose sum is σ = 16294197840. Its totient is φ = 8135730432.

The previous prime is 12212121949. The next prime is 12212122019. The reversal of 12212122011 is 11022121221.

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

It is not a de Polignac number, because 12212122011 - 2¹³ = 12212113819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12212122019) 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, 1416046 + ... + 1424643.

It is an arithmetic number, because the mean of its divisors is an integer number (2036774730).

Almost surely, 2^12212122011 is an apocalyptic number.

12212122011 is a deficient number, since it is larger than the sum of its proper divisors (4082075829).

12212122011 is a wasteful number, since it uses less digits than its factorization.

12212122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2842125.

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

Adding to 12212122011 its reverse (11022121221), we get a palindrome (23234243232).

The spelling of 12212122011 in words is "twelve billion, two hundred twelve million, one hundred twenty-two thousand, eleven".