211421110451244 has 48 divisors (see below), whose sum is σ = 501856964125440. Its totient is φ = 69254410916160.

The previous prime is 211421110451231. The next prime is 211421110451251. The reversal of 211421110451244 is 442154011124112.

It is a super-2 number, since 2×211421110451244² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51520459 + ... + 55472514.

It is an arithmetic number, because the mean of its divisors is an integer number (10455353419280).

Almost surely, 2^{211421110451244} is an apocalyptic number.

It is an amenable number.

211421110451244 is an abundant number, since it is smaller than the sum of its proper divisors (290435853674196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211421110451244 is a wasteful number, since it uses less digits than its factorization.

211421110451244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106995830 (or 106995828 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 33.

Adding to 211421110451244 its reverse (442154011124112), we get a palindrome (653575121575356).

The spelling of 211421110451244 in words is "two hundred eleven trillion, four hundred twenty-one billion, one hundred ten million, four hundred fifty-one thousand, two hundred forty-four".