20211002010 has 64 divisors (see below), whose sum is σ = 53933040000. Its totient is φ = 5385897216.

The previous prime is 20211001981. The next prime is 20211002047. The reversal of 20211002010 is 1020011202.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20211001983 and 20211002001.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 379762 + ... + 429698.

It is an arithmetic number, because the mean of its divisors is an integer number (842703750).

Almost surely, 2^20211002010 is an apocalyptic number.

20211002010 is an abundant number, since it is smaller than the sum of its proper divisors (33722037990).

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

20211002010 is a wasteful number, since it uses less digits than its factorization.

20211002010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51452 (or 51446 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20211002010 its reverse (1020011202), we get a palindrome (21231013212).

The spelling of 20211002010 in words is "twenty billion, two hundred eleven million, two thousand, ten".