121000022011 has 4 divisors (see below), whose sum is σ = 132000024024. Its totient is φ = 110000020000.

The previous prime is 121000021981. The next prime is 121000022021. The reversal of 121000022011 is 110220000121.

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 121000022011 - 2¹³ = 121000013819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121000022021) 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, 5500000990 + ... + 5500001011.

It is an arithmetic number, because the mean of its divisors is an integer number (33000006006).

Almost surely, 2^121000022011 is an apocalyptic number.

121000022011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121000022011 is a deficient number, since it is larger than the sum of its proper divisors (11000002013).

121000022011 is a wasteful number, since it uses less digits than its factorization.

121000022011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11000002012.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 121000022011 its reverse (110220000121), we get a palindrome (231220022132).

The spelling of 121000022011 in words is "one hundred twenty-one billion, twenty-two thousand, eleven".