211421012241242 has 16 divisors (see below), whose sum is σ = 317296460573352. Its totient is φ = 105655527333120.

The previous prime is 211421012241217. The next prime is 211421012241251. The reversal of 211421012241242 is 242142210124112.

It can be written as a sum of positive squares in 4 ways, for example, as 152150276076241 + 59270736165001 = 12334921^2 + 7698749^2 .

It is a super-2 number, since 2×211421012241242² (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 7 ways as a sum of consecutive naturals, for example, 230638892 + ... + 231553752.

Almost surely, 2^{211421012241242} is an apocalyptic number.

211421012241242 is a deficient number, since it is larger than the sum of its proper divisors (105875448332110).

211421012241242 is a wasteful number, since it uses less digits than its factorization.

211421012241242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974833.

The product of its (nonzero) digits is 4096, while the sum is 29.

Adding to 211421012241242 its reverse (242142210124112), we get a palindrome (453563222365354).

The spelling of 211421012241242 in words is "two hundred eleven trillion, four hundred twenty-one billion, twelve million, two hundred forty-one thousand, two hundred forty-two".