1521400214222 has 32 divisors (see below), whose sum is σ = 2609994604800. Its totient is φ = 651558878208.

The previous prime is 1521400214107. The next prime is 1521400214239. The reversal of 1521400214222 is 2224120041251.

It is a super-2 number, since 2×1521400214222² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1521400214191 and 1521400214200.

It is a congruent number.

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, 146720654 + ... + 146731022.

It is an arithmetic number, because the mean of its divisors is an integer number (81562331400).

Almost surely, 2^{1521400214222} is an apocalyptic number.

1521400214222 is a deficient number, since it is larger than the sum of its proper divisors (1088594390578).

1521400214222 is a wasteful number, since it uses less digits than its factorization.

1521400214222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16920.

The product of its (nonzero) digits is 2560, while the sum is 26.

Adding to 1521400214222 its reverse (2224120041251), we get a palindrome (3745520255473).

The spelling of 1521400214222 in words is "one trillion, five hundred twenty-one billion, four hundred million, two hundred fourteen thousand, two hundred twenty-two".