21054121202 has 8 divisors (see below), whose sum is σ = 32954276736. Its totient is φ = 10069362292.

The previous prime is 21054121183. The next prime is 21054121237. The reversal of 21054121202 is 20212145012.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228849098 + ... + 228849189.

It is an arithmetic number, because the mean of its divisors is an integer number (4119284592).

Almost surely, 2^21054121202 is an apocalyptic number.

21054121202 is a deficient number, since it is larger than the sum of its proper divisors (11900155534).

21054121202 is a wasteful number, since it uses less digits than its factorization.

21054121202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457698312.

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 21054121202 its reverse (20212145012), we get a palindrome (41266266214).

The spelling of 21054121202 in words is "twenty-one billion, fifty-four million, one hundred twenty-one thousand, two hundred two".