211421002 has 8 divisors (see below), whose sum is σ = 341526276. Its totient is φ = 97578912.

The previous prime is 211420949. The next prime is 211421009. The reversal of 211421002 is 200124112.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 205893801 + 5527201 = 14349^2 + 2351^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (211421009) 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, 4065763 + ... + 4065814.

Almost surely, 2^211421002 is an apocalyptic number.

211421002 is a deficient number, since it is larger than the sum of its proper divisors (130105274).

211421002 is a wasteful number, since it uses less digits than its factorization.

211421002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8131592.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 211421002 is about 14540.3233113985. The cubic root of 211421002 is about 595.7298691013.

Adding to 211421002 its reverse (200124112), we get a palindrome (411545114).

The spelling of 211421002 in words is "two hundred eleven million, four hundred twenty-one thousand, two".