210212001021 has 32 divisors (see below), whose sum is σ = 324156727296. Its totient is φ = 119959272000.

The previous prime is 210212001011. The next prime is 210212001031. The reversal of 210212001021 is 120100212012.

It is an interprime number because it is at equal distance from previous prime (210212001011) and next prime (210212001031).

It is not a de Polignac number, because 210212001021 - 2¹¹ = 210211998973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210212000988 and 210212001006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210212001011) 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, 2738985 + ... + 2814686.

It is an arithmetic number, because the mean of its divisors is an integer number (10129897728).

Almost surely, 2^210212001021 is an apocalyptic number.

It is an amenable number.

210212001021 is a deficient number, since it is larger than the sum of its proper divisors (113944726275).

210212001021 is a wasteful number, since it uses less digits than its factorization.

210212001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5553753.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 210212001021 its reverse (120100212012), we get a palindrome (330312213033).

The spelling of 210212001021 in words is "two hundred ten billion, two hundred twelve million, one thousand, twenty-one".