21111202023130 has 32 divisors (see below), whose sum is σ = 38305762928640. Its totient is φ = 8376592029120.

The previous prime is 21111202023083. The next prime is 21111202023133. The reversal of 21111202023130 is 3132020211112.

It is a super-2 number, since 2×21111202023130² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21111202023098 and 21111202023107.

It is not an unprimeable number, because it can be changed into a prime (21111202023133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6251256 + ... + 9016684.

It is an arithmetic number, because the mean of its divisors is an integer number (1197055091520).

Almost surely, 2^{21111202023130} is an apocalyptic number.

21111202023130 is a deficient number, since it is larger than the sum of its proper divisors (17194560905510).

21111202023130 is a wasteful number, since it uses less digits than its factorization.

21111202023130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2771574.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21111202023130 its reverse (3132020211112), we get a palindrome (24243222234242).

It can be divided in two parts, 2111120 and 2023130, that added together give a triangular number (4134250 = T₂₈₇₅).

The spelling of 21111202023130 in words is "twenty-one trillion, one hundred eleven billion, two hundred two million, twenty-three thousand, one hundred thirty".