121001022021011 has 32 divisors (see below), whose sum is σ = 133507820160000. Its totient is φ = 108753697198080.

The previous prime is 121001022020927. The next prime is 121001022021041. The reversal of 121001022021011 is 110120220100121.

It is a de Polignac number, because none of the positive numbers 2^k-121001022021011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121001022021041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 361895690 + ... + 362229888.

It is an arithmetic number, because the mean of its divisors is an integer number (4172119380000).

Almost surely, 2^{121001022021011} is an apocalyptic number.

121001022021011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121001022021011 is a deficient number, since it is larger than the sum of its proper divisors (12506798138989).

121001022021011 is a wasteful number, since it uses less digits than its factorization.

121001022021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335459.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121001022021011 its reverse (110120220100121), we get a palindrome (231121242121132).

The spelling of 121001022021011 in words is "one hundred twenty-one trillion, one billion, twenty-two million, twenty-one thousand, eleven".