21121446202 has 16 divisors (see below), whose sum is σ = 31781306880. Its totient is φ = 10527729408.

The previous prime is 21121446191. The next prime is 21121446217. The reversal of 21121446202 is 20264412112.

It is a super-2 number, since 2×21121446202² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 840423 + ... + 865189.

It is an arithmetic number, because the mean of its divisors is an integer number (1986331680).

Almost surely, 2^21121446202 is an apocalyptic number.

21121446202 is a deficient number, since it is larger than the sum of its proper divisors (10659860678).

21121446202 is a wasteful number, since it uses less digits than its factorization.

21121446202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26085.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 21121446202 its reverse (20264412112), we get a palindrome (41385858314).

The spelling of 21121446202 in words is "twenty-one billion, one hundred twenty-one million, four hundred forty-six thousand, two hundred two".