21120022201100 has 18 divisors (see below), whose sum is σ = 45830448176604. Its totient is φ = 8448008880400.

The previous prime is 21120022201079. The next prime is 21120022201121. The reversal of 21120022201100 is 110222002112.

It is an interprime number because it is at equal distance from previous prime (21120022201079) and next prime (21120022201121).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 105600110906 + ... + 105600111105.

Almost surely, 2^{21120022201100} is an apocalyptic number.

21120022201100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21120022201100 is an abundant number, since it is smaller than the sum of its proper divisors (24710425975504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21120022201100 is a wasteful number, since it uses less digits than its factorization.

21120022201100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211200222025 (or 211200222018 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21120022201100 its reverse (110222002112), we get a palindrome (21230244203212).

The spelling of 21120022201100 in words is "twenty-one trillion, one hundred twenty billion, twenty-two million, two hundred one thousand, one hundred".