1212022011 has 8 divisors (see below), whose sum is σ = 1619982160. Its totient is φ = 806038272.

The previous prime is 1212022003. The next prime is 1212022013. The reversal of 1212022011 is 1102202121.

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

It is not a de Polignac number, because 1212022011 - 2³ = 1212022003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212022013) 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, 492670 + ... + 495123.

It is an arithmetic number, because the mean of its divisors is an integer number (202497770).

Almost surely, 2^1212022011 is an apocalyptic number.

1212022011 is a deficient number, since it is larger than the sum of its proper divisors (407960149).

1212022011 is an equidigital number, since it uses as much as digits as its factorization.

1212022011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988205.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1212022011 is about 34814.1064943508. The cubic root of 1212022011 is about 1066.1954765330.

Adding to 1212022011 its reverse (1102202121), we get a palindrome (2314224132).

The spelling of 1212022011 in words is "one billion, two hundred twelve million, twenty-two thousand, eleven".