21122006661141 has 16 divisors (see below), whose sum is σ = 28673967837888. Its totient is φ = 13826491776000.

The previous prime is 21122006661137. The next prime is 21122006661199. The reversal of 21122006661141 is 14116660022112.

It is not a de Polignac number, because 21122006661141 - 2² = 21122006661137 is a prime.

It is a super-2 number, since 2×21122006661141² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122006660141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99912435 + ... + 100123616.

It is an arithmetic number, because the mean of its divisors is an integer number (1792122989868).

Almost surely, 2^{21122006661141} is an apocalyptic number.

It is an amenable number.

21122006661141 is a deficient number, since it is larger than the sum of its proper divisors (7551961176747).

21122006661141 is a wasteful number, since it uses less digits than its factorization.

21122006661141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200036692.

The product of its (nonzero) digits is 6912, while the sum is 33.

Adding to 21122006661141 its reverse (14116660022112), we get a palindrome (35238666683253).

The spelling of 21122006661141 in words is "twenty-one trillion, one hundred twenty-two billion, six million, six hundred sixty-one thousand, one hundred forty-one".