20021201010102 has 16 divisors (see below), whose sum is σ = 40042690881840. Its totient is φ = 6673685526432.

The previous prime is 20021201010089. The next prime is 20021201010103. The reversal of 20021201010102 is 20101010212002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021201010103) 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, 11129613 + ... + 12802760.

It is an arithmetic number, because the mean of its divisors is an integer number (2502668180115).

Almost surely, 2^{20021201010102} is an apocalyptic number.

20021201010102 is an abundant number, since it is smaller than the sum of its proper divisors (20021489871738).

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

20021201010102 is a wasteful number, since it uses less digits than its factorization.

20021201010102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24071807.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20021201010102 its reverse (20101010212002), we get a palindrome (40122211222104).

The spelling of 20021201010102 in words is "twenty trillion, twenty-one billion, two hundred one million, ten thousand, one hundred two".