121345222253554 has 32 divisors (see below), whose sum is σ = 200709942660864. Its totient is φ = 54680593181760.

The previous prime is 121345222253543. The next prime is 121345222253653. The reversal of 121345222253554 is 455352222543121.

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, 318907629 + ... + 319287904.

It is an arithmetic number, because the mean of its divisors is an integer number (6272185708152).

Almost surely, 2^{121345222253554} is an apocalyptic number.

121345222253554 is a deficient number, since it is larger than the sum of its proper divisors (79364720407310).

121345222253554 is a wasteful number, since it uses less digits than its factorization.

121345222253554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638195722.

The product of its digits is 2880000, while the sum is 46.

Adding to 121345222253554 its reverse (455352222543121), we get a palindrome (576697444796675).

The spelling of 121345222253554 in words is "one hundred twenty-one trillion, three hundred forty-five billion, two hundred twenty-two million, two hundred fifty-three thousand, five hundred fifty-four".