21121122203002 has 8 divisors (see below), whose sum is σ = 32008298596596. Its totient is φ = 10451689337472.

The previous prime is 21121122202997. The next prime is 21121122203009. The reversal of 21121122203002 is 20030222112112.

It can be written as a sum of positive squares in 2 ways, for example, as 19684386750681 + 1436735452321 = 4436709^2 + 1198639^2 .

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

It is a super-2 number, since 2×21121122203002² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21121122203009) 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, 54435881773 + ... + 54435882160.

Almost surely, 2^{21121122203002} is an apocalyptic number.

21121122203002 is a deficient number, since it is larger than the sum of its proper divisors (10887176393594).

21121122203002 is a wasteful number, since it uses less digits than its factorization.

21121122203002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108871764032.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21121122203002 its reverse (20030222112112), we get a palindrome (41151344315114).

The spelling of 21121122203002 in words is "twenty-one trillion, one hundred twenty-one billion, one hundred twenty-two million, two hundred three thousand, two".