20211020212002 has 8 divisors (see below), whose sum is σ = 40422040424016. Its totient is φ = 6737006737332.

The previous prime is 20211020211979. The next prime is 20211020212003. The reversal of 20211020212002 is 20021202011202.

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

20211020212002 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (20211020212003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1684251684328 + ... + 1684251684339.

It is an arithmetic number, because the mean of its divisors is an integer number (5052755053002).

Almost surely, 2^{20211020212002} is an apocalyptic number.

20211020212002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20211020212002 is a wasteful number, since it uses less digits than its factorization.

20211020212002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3368503368672.

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

Adding to 20211020212002 its reverse (20021202011202), we get a palindrome (40232222223204).

The spelling of 20211020212002 in words is "twenty trillion, two hundred eleven billion, twenty million, two hundred twelve thousand, two".