21012011120122 has 8 divisors (see below), whose sum is σ = 34383290923872. Its totient is φ = 9550914145500.

The previous prime is 21012011120069. The next prime is 21012011120129. The reversal of 21012011120122 is 22102111021012.

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

It is a super-2 number, since 2×21012011120122² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21012011120096 and 21012011120105.

It is not an unprimeable number, because it can be changed into a prime (21012011120129) 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, 477545707254 + ... + 477545707297.

It is an arithmetic number, because the mean of its divisors is an integer number (4297911365484).

Almost surely, 2^{21012011120122} is an apocalyptic number.

21012011120122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21012011120122 is a deficient number, since it is larger than the sum of its proper divisors (13371279803750).

21012011120122 is a wasteful number, since it uses less digits than its factorization.

21012011120122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955091414564.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21012011120122 its reverse (22102111021012), we get a palindrome (43114122141134).

The spelling of 21012011120122 in words is "twenty-one trillion, twelve billion, eleven million, one hundred twenty thousand, one hundred twenty-two".