7212203021 has 8 divisors (see below), whose sum is σ = 7297868160. Its totient is φ = 7126640928.

The previous prime is 7212202999. The next prime is 7212203077. The reversal of 7212203021 is 1203022127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7212203021 - 2²⁶ = 7145094157 is a prime.

It is a super-2 number, since 2×7212203021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7212202984 and 7212203002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7212203221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119900 + ... + 169706.

It is an arithmetic number, because the mean of its divisors is an integer number (912233520).

Almost surely, 2^7212203021 is an apocalyptic number.

It is an amenable number.

7212203021 is a deficient number, since it is larger than the sum of its proper divisors (85665139).

7212203021 is a wasteful number, since it uses less digits than its factorization.

7212203021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51523.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 7212203021 is about 84924.6902908689. The cubic root of 7212203021 is about 1932.0690689579.

Adding to 7212203021 its reverse (1203022127), we get a palindrome (8415225148).

The spelling of 7212203021 in words is "seven billion, two hundred twelve million, two hundred three thousand, twenty-one".