21111011202 has 8 divisors (see below), whose sum is σ = 42222022416. Its totient is φ = 7037003732.

The previous prime is 21111011189. The next prime is 21111011231. The reversal of 21111011202 is 20211011112.

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

21111011202 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1759250928 + ... + 1759250939.

It is an arithmetic number, because the mean of its divisors is an integer number (5277752802).

Almost surely, 2^21111011202 is an apocalyptic number.

21111011202 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21111011202 is a wasteful number, since it uses less digits than its factorization.

21111011202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3518501872.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21111011202 its reverse (20211011112), we get a palindrome (41322022314).

The spelling of 21111011202 in words is "twenty-one billion, one hundred eleven million, eleven thousand, two hundred two".