20002021021210 has 16 divisors (see below), whose sum is σ = 36003830761800. Its totient is φ = 8000765536576.

The previous prime is 20002021021201. The next prime is 20002021021219. The reversal of 20002021021210 is 1212012020002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20002021021201) and next prime (20002021021219).

It can be written as a sum of positive squares in 4 ways, for example, as 19989635334529 + 12385686681 = 4470977^2 + 111291^2 .

It is not an unprimeable number, because it can be changed into a prime (20002021021219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3364105 + ... + 7163884.

Almost surely, 2^{20002021021210} is an apocalyptic number.

20002021021210 is a deficient number, since it is larger than the sum of its proper divisors (16001809740590).

20002021021210 is a wasteful number, since it uses less digits than its factorization.

20002021021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10717985.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20002021021210 its reverse (1212012020002), we get a palindrome (21214033041212).

The spelling of 20002021021210 in words is "twenty trillion, two billion, twenty-one million, twenty-one thousand, two hundred ten".