20121420201 has 16 divisors (see below), whose sum is σ = 29323058688. Its totient is φ = 12217939200.

The previous prime is 20121420199. The next prime is 20121420203. The reversal of 20121420201 is 10202412102.

It is an interprime number because it is at equal distance from previous prime (20121420199) and next prime (20121420203).

It is not a de Polignac number, because 20121420201 - 2¹ = 20121420199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20121420203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6361930 + ... + 6365091.

It is an arithmetic number, because the mean of its divisors is an integer number (1832691168).

Almost surely, 2^20121420201 is an apocalyptic number.

It is an amenable number.

20121420201 is a deficient number, since it is larger than the sum of its proper divisors (9201638487).

20121420201 is a wasteful number, since it uses less digits than its factorization.

20121420201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12727072.

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

Adding to 20121420201 its reverse (10202412102), we get a palindrome (30323832303).

The spelling of 20121420201 in words is "twenty billion, one hundred twenty-one million, four hundred twenty thousand, two hundred one".