211121001220010 has 32 divisors (see below), whose sum is σ = 436732350514560. Its totient is φ = 71979961465152.

The previous prime is 211121001219991. The next prime is 211121001220013. The reversal of 211121001220010 is 10022100121112.

It is a super-2 number, since 2×211121001220010² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (211121001220013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8424608429 + ... + 8424633488.

It is an arithmetic number, because the mean of its divisors is an integer number (13647885953580).

Almost surely, 2^{211121001220010} is an apocalyptic number.

211121001220010 is an abundant number, since it is smaller than the sum of its proper divisors (225611349294550).

211121001220010 is a wasteful number, since it uses less digits than its factorization.

211121001220010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16849242110.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 211121001220010 its reverse (10022100121112), we get a palindrome (221143101341122).

The spelling of 211121001220010 in words is "two hundred eleven trillion, one hundred twenty-one billion, one million, two hundred twenty thousand, ten".