20010401421 has 8 divisors (see below), whose sum is σ = 26840299584. Its totient is φ = 13260385440.

The previous prime is 20010401417. The next prime is 20010401443. The reversal of 20010401421 is 12410401002.

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

It is not a de Polignac number, because 20010401421 - 2² = 20010401417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20010401421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010401401) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 19969960 + ... + 19970961.

It is an arithmetic number, because the mean of its divisors is an integer number (3355037448).

Almost surely, 2^20010401421 is an apocalyptic number.

It is an amenable number.

20010401421 is a deficient number, since it is larger than the sum of its proper divisors (6829898163).

20010401421 is a wasteful number, since it uses less digits than its factorization.

20010401421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39941091.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20010401421 its reverse (12410401002), we get a palindrome (32420802423).

The spelling of 20010401421 in words is "twenty billion, ten million, four hundred one thousand, four hundred twenty-one".