21202123414040 has 64 divisors (see below), whose sum is σ = 48058745960160. Its totient is φ = 8417936512000.

The previous prime is 21202123414037. The next prime is 21202123414103. The reversal of 21202123414040 is 4041432120212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46357919 + ... + 46813041.

Almost surely, 2^{21202123414040} is an apocalyptic number.

21202123414040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21202123414040 is an abundant number, since it is smaller than the sum of its proper divisors (26856622546120).

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

21202123414040 is a wasteful number, since it uses less digits than its factorization.

21202123414040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463772 (or 463768 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 21202123414040 its reverse (4041432120212), we get a palindrome (25243555534252).

The spelling of 21202123414040 in words is "twenty-one trillion, two hundred two billion, one hundred twenty-three million, four hundred fourteen thousand, forty".