4021421021211 has 16 divisors (see below), whose sum is σ = 5862663924480. Its totient is φ = 2431673087520.

The previous prime is 4021421021209. The next prime is 4021421021213. The reversal of 4021421021211 is 1121201241204.

It is an interprime number because it is at equal distance from previous prime (4021421021209) and next prime (4021421021213).

It is not a de Polignac number, because 4021421021211 - 2¹ = 4021421021209 is a prime.

It is a super-2 number, since 2×4021421021211² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4021421021213) 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, 138779640 + ... + 138808613.

It is an arithmetic number, because the mean of its divisors is an integer number (366416495280).

Almost surely, 2^{4021421021211} is an apocalyptic number.

4021421021211 is a deficient number, since it is larger than the sum of its proper divisors (1841242903269).

4021421021211 is a wasteful number, since it uses less digits than its factorization.

4021421021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277588706.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 4021421021211 its reverse (1121201241204), we get a palindrome (5142622262415).

The spelling of 4021421021211 in words is "four trillion, twenty-one billion, four hundred twenty-one million, twenty-one thousand, two hundred eleven".