2211010021 has 16 divisors (see below), whose sum is σ = 2557431360. Its totient is φ = 1889153280.

The previous prime is 2211010019. The next prime is 2211010037. The reversal of 2211010021 is 1200101122.

2211010021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2211010021 - 2¹ = 2211010019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211010091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133750 + ... + 149368.

It is an arithmetic number, because the mean of its divisors is an integer number (159839460).

Almost surely, 2^2211010021 is an apocalyptic number.

It is an amenable number.

2211010021 is a deficient number, since it is larger than the sum of its proper divisors (346421339).

2211010021 is a wasteful number, since it uses less digits than its factorization.

2211010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16404.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 2211010021 is about 47021.3783400700. The cubic root of 2211010021 is about 1302.7574646841.

Adding to 2211010021 its reverse (1200101122), we get a palindrome (3411111143).

It can be divided in two parts, 22110 and 10021, that added together give a triangular number (32131 = T₂₅₃).

The spelling of 2211010021 in words is "two billion, two hundred eleven million, ten thousand, twenty-one".