2021101220211 has 32 divisors (see below), whose sum is σ = 2820568884480. Its totient is φ = 1285922761344.

The previous prime is 2021101220209. The next prime is 2021101220251. The reversal of 2021101220211 is 1120221011202.

It is not a de Polignac number, because 2021101220211 - 2¹ = 2021101220209 is a prime.

It is a super-2 number, since 2×2021101220211² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2021101220251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24308236 + ... + 24391238.

It is an arithmetic number, because the mean of its divisors is an integer number (88142777640).

Almost surely, 2^{2021101220211} is an apocalyptic number.

2021101220211 is a deficient number, since it is larger than the sum of its proper divisors (799467664269).

2021101220211 is a wasteful number, since it uses less digits than its factorization.

2021101220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87235.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2021101220211 its reverse (1120221011202), we get a palindrome (3141322231413).

The spelling of 2021101220211 in words is "two trillion, twenty-one billion, one hundred one million, two hundred twenty thousand, two hundred eleven".