121022212011 has 4 divisors (see below), whose sum is σ = 161362949352. Its totient is φ = 80681474672.

The previous prime is 121022212001. The next prime is 121022212019. The reversal of 121022212011 is 110212220121.

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 121022212011 - 2⁵ = 121022211979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121022212019) 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, 20170368666 + ... + 20170368671.

It is an arithmetic number, because the mean of its divisors is an integer number (40340737338).

Almost surely, 2^121022212011 is an apocalyptic number.

121022212011 is a deficient number, since it is larger than the sum of its proper divisors (40340737341).

121022212011 is an equidigital number, since it uses as much as digits as its factorization.

121022212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40340737340.

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

Adding to 121022212011 its reverse (110212220121), we get a palindrome (231234432132).

The spelling of 121022212011 in words is "one hundred twenty-one billion, twenty-two million, two hundred twelve thousand, eleven".