20210201021011 has 4 divisors (see below), whose sum is σ = 20210450392224. Its totient is φ = 20209951649800.

The previous prime is 20210201020973. The next prime is 20210201021047. The reversal of 20210201021011 is 11012010201202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20210201021011 - 2¹⁹ = 20210200496723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20210201020982 and 20210201021000.

It is not an unprimeable number, because it can be changed into a prime (20210201021411) 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, 124564000 + ... + 124726141.

It is an arithmetic number, because the mean of its divisors is an integer number (5052612598056).

Almost surely, 2^{20210201021011} is an apocalyptic number.

20210201021011 is a deficient number, since it is larger than the sum of its proper divisors (249371213).

20210201021011 is an equidigital number, since it uses as much as digits as its factorization.

20210201021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249371212.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20210201021011 its reverse (11012010201202), we get a palindrome (31222211222213).

The spelling of 20210201021011 in words is "twenty trillion, two hundred ten billion, two hundred one million, twenty-one thousand, eleven".