2212001021021 has 4 divisors (see below), whose sum is σ = 2413092022944. Its totient is φ = 2010910019100.

The previous prime is 2212001020991. The next prime is 2212001021029. The reversal of 2212001021021 is 1201201002122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2212001021021 - 2¹⁴ = 2212001004637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2212001020987 and 2212001021005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212001021029) 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, 100545500945 + ... + 100545500966.

It is an arithmetic number, because the mean of its divisors is an integer number (603273005736).

Almost surely, 2^{2212001021021} is an apocalyptic number.

It is an amenable number.

2212001021021 is a deficient number, since it is larger than the sum of its proper divisors (201091001923).

2212001021021 is a wasteful number, since it uses less digits than its factorization.

2212001021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201091001922.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2212001021021 its reverse (1201201002122), we get a palindrome (3413202023143).

The spelling of 2212001021021 in words is "two trillion, two hundred twelve billion, one million, twenty-one thousand, twenty-one".