20021400002 has 4 divisors (see below), whose sum is σ = 30032100006. Its totient is φ = 10010700000.

The previous prime is 20021400001. The next prime is 20021400023. The reversal of 20021400002 is 20000412002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20000412002 = 2 ⋅10000206001.

It can be written as a sum of positive squares in only one way, i.e., 13682214841 + 6339185161 = 116971^2 + 79619^2 .

It is not an unprimeable number, because it can be changed into a prime (20021400001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005349999 + ... + 5005350002.

Almost surely, 2^20021400002 is an apocalyptic number.

20021400002 is a deficient number, since it is larger than the sum of its proper divisors (10010700004).

20021400002 is a wasteful number, since it uses less digits than its factorization.

20021400002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10010700003.

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 20021400002 its reverse (20000412002), we get a palindrome (40021812004).

The spelling of 20021400002 in words is "twenty billion, twenty-one million, four hundred thousand, two".